The derived dry bulk modulus must be positive and greater than 2/3 of shear modulus to insure a positive lame constant and Poisson's ratio.
提取的干燥体变模量必须为正，并且大于剪切模量的2/3，以保证拉梅常数和泊松比为正。
The single-screw pump is a kind of rotary positive-displacement pump with inner gearing. Its main working parts include eccentric screw and fixed bush. Due to special geometric shapes of the rotor and the stator, several separate seal cavities come into being respectively. The rotation of the rotor drives the transfer of media in all seal cavities from the suction end to the extrusion end continuously at a constant speed with the same volume.
单螺杆泵是一种内啮合回转式容积泵，主要工作部件是偏心螺杆和固定的衬套，由于转、定子的特殊几何形状，分别形成数个单独的密封容腔，转子的运转，将各个密封腔内的介质连续地、匀速地、容积不变地从吸入端输送到压出端。
The results demonstrated that in the temperature range of 30~65℃, the reaction enthalpy is around zero, the equilibrium constant is about 1, the reaction is close to thermodynamic equilibrium, and the standard Gibbs free energy change is positive for each step of the three consecutive reactions.
结果表明，在30~65℃范围内，每步酯交换反应的反应焓均接近于零，平衡常数接近于1，每步反应均接近于热力学平衡，反应标准吉布斯自由能变化ΔG o均大于零；主要组分甲醇的活度系数接近于1。
In addition, the stability of constant positive equilibrium point is discussed by elementary concept and methods in population dynamics.
同时，由种群动力学中的一些基本概念及方法，讨论该模型的常数正平衡点的稳定性。
In order to improve the dark room contrast ratio, many different voltage waveforms such as exponential waveform or constant one have been applied during the reset period. Currently, the slowly increasing and thereafter decreasing ramp waveforms have been used to produce a stable positive-resistance gas discharge that can generate the necessary levels of priming without emitting very much light.
本文在分析了斜坡驱动原理的基础上给出了一种新的高对比度驱动波形，该驱动波形同传统的采用斜坡的驱动波形相比，不仅可以大幅度地提高暗室对比度，同时可以缩减准备期在一场时间中所占的比例，从而将多余的时间用于有效的维持显示。
Repairs the positive wave invertor to use the chip control, the pulse-duration modulation, the constant voltage output, has the completely automatic to protect the function reliably, the job safety stable, has the undervoltage, the overload, to press, the short circuit warm and so on many kinds of protection functions, the economy to be practical, practical in the user community.
修正波逆变器采用芯片控制，脉宽调制，稳压输出，有全自动保护功能，工作安全可靠稳定，具有欠压、过载、过压、过温、短路等多种保护功能，经济实用，实用于广大用户。
In Chapter 1, we introduce some elementary concepts and results from coincidence degree theory. In Chapter 2, we consider a delay differential equations model of plankton allelopathy proposed by Maynard-Smith, Chattopadhyay, Mukhopathyay, Jin Zhen and Ma Zhien et al. By applying Mawhin's continuation theorem of coincidence degree theory, we establish some easily verifiable sufficient conditions on the existence of multiple positive periodic solutions. In Chapter 3, with the help of differential equations with piecewise constant arguments, we propose a discrete analogue of a differential equations model of plankton allelopathy modified by Maynard-Smith and Chattopadhyay, which is governed by nonautonomous difference equations. A set of easily verifiable sufficient conditions are obtained for this discrete time model by Mawhin's continuation theorem.
第1章介绍了有关重合度理论的基础知识；第2章研究了经Maynard-Smith，Chattopadhyay，Mukhopathyay，靳祯和马知恩等学者逐步建立完善的一类浮游生物植化相克时滞微分方程模型，利用Mawhin延拓定理建立了该模型存在多重正周期解的一组简明实用的充分条件；第3章首先借助具分段常数变元的微分方程将Maynard-Smith和Chattopadhyay提出的一类浮游生物植化相克微分方程模型离散化，建立了一个相应的差分方程模型，然后利用Mawhin延拓定理研究了该模型多重正周期解的存在性，获得了一组简明实用的充分条件。
Micro-arc oxidation of Mg alloys was carried out at a constant current density and frequency and pulse width of 140~430 μs corresponding to positive pulse duty cycles from 10% to 30%.
为了研究双极性脉冲微弧氧化电源脉冲宽度对镁合金微弧氧化的影响，在恒流、一定频率，占空比10%~30%对应的脉冲宽度140~430μs条件下对镁合金微弧氧化进行了研究。
Aim for constant improvement and consciously and methodically work towards positive change where you need it most.
有意识地不断取得进步，并用有效的方法往积极的方向改进。
Methods Animals were randomly and equally divided into five groups: saline control group, positive drug control group, low-dose, medium-dose and high-dose crocetin group. Animals were anesthetized with urethane (1.2 g/kg), then followed by the perfusion of aconitine (10 μg/mL) through caudal vein in rats, or of ouabain (9 μg/mL) through external jugular vain in guinea pigs in a constant velocity of 0.1 mL/min, and the emergence time of ventricular fibrillation, ventricular extrasystole, ventricular tachycanlia and cardiac arrest were then detected and recorded. The recorded time was then translated to the cumulated amount of aconitine and ouabain. Experimental arrhythmia was induced by rapid injection of 4% CaCl2 (140 mg/kg), and the emergence time, persistence time, incidence and death of arrhythmia after the administration were observed.
将实验动物随机分为生理盐水组，阳性药物对照组，藏红花酸高、中、低剂量组，SD大鼠采用1.2 g/kg乌拉坦麻醉后，从尾静脉匀速(0.1 ml/min)灌注10μg/ml乌头碱溶液，豚鼠麻醉后从颈静脉匀速(0.1 ml/min)灌注9μg/ml哇巴因溶液，观察出现室性期前收缩、室性心动过速、室颤和心脏停搏的时间，然后换算成乌头碱和哇巴因的累积量；快速推注4%氯化钙(140 mg/kg)诱导大鼠心律失常，观察给药后心律失常出现时间、持续时间、心律失常发生数及死亡数。
The national principle of compensation, with the constant promotion of State Compensation Law reform of our country, act innocent judgement case China house compensate for the subject born in the constant change too, the article bear to criminal innocent judgement case Chinese whom house compensate for subject carry on simple analysis and State Compensation Law of our country the same as other laws briefly mainly, it was basic demand which accords with the constitution principle that based constitution and made, reflect the constitution ensures the civil rights in ensuring the implementation of the constitution, aim to control state power play a positive role criminal innocent judgement case Chinese whom house compensate for bear subject judicial authority whose I am mainly too; Public security organ, procuratorial organ and people's cour Criminal innocent judgement case responsibility of compensation, house of Chinese, divide three principles, the legislation in the compensation responsibility of Chinese family of the criminal innocent judgement case mainly behaves insufficiently, with how improve insufficient I pass current criminal innocent judgement case Chinese house compensate for, divide responsibility system adapt to economic development today, with fast growing economy Requirement.
摘要随着我国国家赔偿法改革的不断深化，行事无罪判决案件中国家赔偿承担的主体也在不断的改变，本篇文章对刑事无罪判决案件中国家赔偿的承担主体进行了简单的分析和概括。我国国家赔偿法同其他法律一样，是以宪法为根据制定的是符合宪法原则的基本要求的，对于保障宪法的实施体现宪法保障民权，控制国家权力的宗旨也起到了积极的作用。刑事无罪判决案件中国家赔偿的承担主体主要是我是的司法机关；公安机关，检察机关和人民法院。刑事无罪判决案件中国家赔偿的责任划分三项原则，在刑事无罪判决案件中国家赔偿责任的立法不足主要表现，和如何完善不足。在经济发展迅速的今天，我过现行的刑事无罪判决案件中国家赔偿划分责任体系已经不在适应经济发展的要求，。
Majority of the problems researched by them were confined to the difference equations with positive variable or constant coefficient.
但大部分讨论的都是确定方程中变系数为正、或常系数的差分方程问题。
Timing belts Timing belts Timing belts have evenly spaced teeth on their bottom side which mesh with grooves cut on the periphery of the pulleys to produce a positive, no-slip, constant-speed drive, similar to chain drives.
同步齿形皮带同步齿形皮带在其内表面有均匀隔开的齿，齿与在滑轮周围开的凹槽相啮合产生刚性、无滑动、恒速的驭动，与链式传动类似。
It is demonstrated that is a linear equation where m is a po-sitive real constant, n a positive real variable and U1 and U2 arbitrary complex variables and consequently the role of the equation in studying the displacement of the neutral point is discussed.
本文首先证明当m为正实常数，n为正实变数，_1和_2为任意常复数时，=m_1+n_2/m+n为直线方程，然后介绍了它对研究中性点位移所起的作用。
Transmit Softclipping Time Constant Receiving Input Sidetone Network Input Line Current Regulation Stop Value Microphone Input Microphone Input Transmit Gain Adjustment Transmit and Receive Part Power Supply Ground Line Current Source Power Supply Voltage Stabilizer Positive Line Unregulated Microcontroller Power Supply Receive Gain Adjustment Negative Earphone Output Positive Earphone Output Ringer Buzzer Output Ring Power Supply Reset Power On Ring Indicator Oscillator Input Mask, Ring Melody Input Data Input Data Clock Input Microcontroller Stabilized Power Supply Reference Voltage (VCC/2) DTMF Filter
1第1页，本页显示记录1-8，共8条记录分1页显示发送Softclipping时间常数接收输入侧音网络输入线电流调节停止价值麦克风输入麦克风输入发射增益调整发送和接收部分电源地线电流源电源稳压器的正电源线无管制的单片机接收增益调整负耳机输出耳机输出正林格蜂鸣器输出电源供应环环指标振荡器输入掩码电复位，环旋律输入数据输入数据时钟输入单片机的稳定电源参考电压（Vcc/2）双音多频滤波器
To improve the light-arc stability and to decrease dissipation power in the circuit arrangement, the absolute value of said lamp current (2) is substantially constant, and said alternating lamp current (2) is pulse-width modulated, whereby the pulse-width ratio between a pulse-width of a positive pulse and a pulse-width of a negative pulse is modulated.
为了改进光电弧的稳定性和减少电路布置的耗散功率，所述灯电流(2)的绝对值基本是常数，所述交变灯电流(2)进行了脉冲宽度调制，由此，正脉冲的脉宽与负脉冲的脉宽的脉宽比进行了调制。
Once beyond the constant policy of positive expectations, the cumulative effect of the policy area most likely become the market continued to strengthen confidence in the source.
一旦超出了积极的期望的一贯政策，该政策方面的累积效应最有可能成为市场继续加强工作的信心。
On the basis of the experimental data measured with a LDA system, vertical velocity distributions are well compared for negative and positive gradient of slopes in different hydraulic conditions in an open channel. It`s concluded as follows: With Froude number increase, Karman constant decrease. A unified formula to describe velocity distribution in adverse slope is proposed and well testified. Viscous sublayer thickness and buffer layer scope in adverse slope are both bigger than those in slope.
在分析激光测速试验资料基础上，通过与正坡上流速分布特性比较，发现负坡垂线流速分布中Karman常数相对正坡为小，负坡上的非均匀流粘性底层范围和厚度均大于正坡上的非均匀流粘性底层范围和厚度等；并在试验基础上提出了统一的垂线流速分布公式。
The present invention relates to a method for heuristically starting up DC brushless servo electric machine, including the following steps of (1) after powerup of an increment type photoelectric encoder, electrifying a stator winding two by two with identical time interval to generate six-directional stator winding resultant magnetic fields; (2) detecting six different angles rotated by the rotor within identical tiny time interval by the photoelectric encoder; (3) selecting most positive value rotation angle from the six different angles, and determining maximum torque corresponding to the stator winding resultant magnetic field, and implementing servo startup using the maximum torque as constant starting torque; (4) after the zero-point signal of the photoelectric encoder occurring, switching to servo operation with normal constant torsion.
本发明直流无刷伺服电机试探启动方法，采用如下步骤：(1)增量式光电编码器上电后对定子绕组采用相同的时间间隔两两通电，顺序产生六个方向的定子绕组合成磁场；(2)由增量式光电编码器检测出转子在相同的微小时间间隔内分别转过的六个不同的角度；(3)从转子六个不同的角度中选出最大正值的转角，确定相应定子绕组合成磁场对应的最大转矩，并以该最大转矩为恒定启动转矩进行伺服启动；(4)当增量式光电编码器零点信号出现后，切换为正常恒转矩伺服运行。
Positive thinking requires constant self motivation and self affirmation.
积极思维需要不断地自我鼓励，自我肯定。