This article introduces structural design of the facepiece for positive pressure self-contained open-circuit compressed air breathing apparatus.
本文介绍了一种新型正压式空气呼吸器面罩的结构设计。
Based on the Cesaro means of Fourier series and the mathematical equivalence between structural parameters of the lattice-form and the birefringent interleavers, a new method for designing planar lightwave circuit-type lattice-form interleavers is proposed.
根据傅里叶级数的Cesaro方法和格子结构型与双折射型光交错复用器结构参数之间的数学等效关系，提出一种格子结构平面光波导光交错复用器结构设计的新方法。
The structural design, design parameters, material chosen and manufacture process of multi-pinhole compound die of main printed circuit board for large screen color TV are introduced.
介绍大屏幕彩色电视机主印制板多小孔复合模的模具结构、设计参数、材料的选用和制造工艺等。
This article did the closet to the condensation type the principle of work to carry on the detailed elaboration, and elaborated the drying system various parts'shaping and the structural design, the monolithic integrated circuit control system's software and hardware design in detail, finally has carried on the detailed analysis to its market value.
本文对冷凝式干衣柜的工作原理进行了详细的论述，并详细论述了干燥系统各部件的选型和结构设计、单片机控制系统的软硬件设计，最后对其市场价值进行了详细的分析。
Applicable to electrical equipment for `electrical insulation structural parts, including the pattern of electrical insulation switch` `` carbon film printed circuit board drilling used a computer pad `Die Jig` Power Hybrid IC `high-power modules such as integrated circuits.
适用于电机`电器设备中作绝缘结构零部件，包括各式样之开关`电器绝缘`碳膜印刷电路板`电脑钻孔用垫板`模具治具`功率混合IC`大功率集成电路模块等。
It introduces a kind of novel loading test system, based on the operation principle of damper. this loading system is operated by the driving motor. it realizes the loading, in that the damper has a negative drive force that puts on the motor. Based on the ordinary electromagnetic damper, the thesis presents a novel hybrid excitation electromagnetic damper which has adjustable work characteristic, analyses the working principle and structural feature of the electromagnetic damper, deduces the formulas to calculate the eddy current density through the Electromagnetic theory, analyses the distribution of the eddy current in the cotyloid rotor, and also studies the method of calculating the damp torque, establishes the mathematical model of the electromagnetic damper, analyses the relationship between the electromagnetic damper structural parameter and damp torque, researches the engineering design and analysis method of the electromagnetic damper, provides theory foundation for the design and analysis of the electromagnetic damper, contrives a hybrid excitation electromagnetic damper that satisfies the target request, designs a set of compound excitation electromagnetic damping loading control system whose control core is AT89C51 monolithic integrated circuit, analyses the electric circuit part, and carries on the experimental test to this set of electric circuits. Finally it debugs this electromagnetic damping loading system, this system satisfies the target request proposed.
论文提出了一个全新的加载测试系统种类，该加载系统是在阻尼器工作原理基础上，利用电动机拖动阻尼器运转，从而阻尼器产生一个与运动方向相反的阻尼力矩，该力矩作用在电动机上实现对电动机加载测试；同时，论文在一般电磁阻尼器基础上提出了一种新型的可调式复合励磁电磁阻尼器结构，该种阻尼器的工作特性在一定范围内可进行调节；论文分析了电磁阻尼器的工作原理和结构特点，运用电磁场理论分析推导了电磁阻尼器的涡电流密度公式，分析了涡电流在转子杯内的分布图，并对阻尼力矩计算方法进行了研究，建立了电磁阻尼器的数学模型，分析了电磁阻尼器结构参数和阻尼力矩之间的关系，对电磁阻尼器的设计和分析方法进行了研究，为电磁阻尼器的工程设计建立了理论基础；设计了满足技术指标要求的复合励磁电磁阻尼器和一套以AT89C51单片机为控制核心的复合励磁电磁阻尼加载控制系统，对该控制系统硬件电路各部分进行了分析和设计，对软件进行了设计，并对控制电路进行了试验调试，该系统满足所提出的加载指标要求。
1 Non-elevator parts and equipment, including: power mains that offered by customer, circuit breaker, structural of lift well, machine room ventilation equipment, water or sump pump equipment for lift pits
非电梯本身的零部件及设备，包括业主提供的主电源开关，断路器，井道的土建结构，机房通风设备，用于地坑的抽水设备或油回收泵
Active-Passive Hybrid method using shunted circuit is used to suppress structural vibration. An active inductance is included in the controller to make the resonant frequency of shunted circuit be tuned continuously within a certain range.
采用基于分支电路的主动－被动混合的控制方法对结构振动进行抑制，通过在控制器中设置主动电感使得分支电路的谐振频率在一定范围内可以连续调节，以适应激励频率的变化。
And/Inverter structural hashing technique was used to simplify the miter circuit first.
算法首先使用与非图结构哈希技术来简化验证任务。
To verify the structural integrity of complex circuit cards has diminished.
核查的结构完整性，复杂的电路卡已经减少。
The introduction of circuit analogue into the structural design of the microwave absorbing composite improves not only the wave absorbing properties, but also the mechanical properties. So it is feasible to apply circuit analogue in the design of microwave absorbing composites.
在提高吸波复合材料吸波性能的同时，电路模拟结构的引入使复合材料力学性能有一定的提高，有利于实现吸波复合材料的吸波/承载一体化。
In this paper, the design of physical dimension and magnetic circuit size was optimized to determine the most suitable structural parameters, based on the mathematic mode of damper and magnetic FEM method.
根据阻尼器的数学模型结合磁场有限元分析的方法对其几何尺寸和磁路尺寸进行优化设计，确定了一组最合理的结构参数；
Based on the piezoelectric effect and piezoelectric equations, this paper has not only studied the sensing properties of PVDF and the mechanism of structural strain monitoring, but also analyzed its working principle and paste technology, the equivalent measurement circuit.
根据压电材料的压电效应和压电方程，研究了PVDF的传感特性以及结构应变监测的机理。分析了PVDF的工作原理、粘贴工艺、等效测量电路等。
Studying the structural features of analog force feedback loop and digital force feedback loop, and determining the solution on dual-width-modulated circuit. 4.
分析了动力调谐陀螺仪模拟再平衡回路和数字再平衡回路的结构特点，通过对两者优缺点的比较，确定了二元调宽电路的解决方案。
This provides a foundation for the antijamming circuit design and the structural design of a proximity fuze.
这一研究结果为近炸引信抗雨场干扰的电路和结构设计提供了依据。
Comparison and analysis are made on principle feature of arc chamber and structural characteristics of operating mechanism in each generation for high pressure thermal expansion SF_6 circuit breakers.
对高压热膨胀式SF6断路器各代灭弧室的原理特点和操动机构的结构特点进行了比较、分析。
The working principle of the hydraulic circuit is discussed. The hydraulic system, including hydraulic implement system, counterweight system, power source system, valves system and auxiliary system, is calculated and designed. Products selections are conducted due to the parameter calculation and structural design.
详细论述了液压回路工作原理，按照液压执行系统、配重系统、动力源系统、阀控系统、辅助系统五个类别对系统的各个元器件进行了参数计算，结构设计以及调研选型。
This paper introduces the construction, working principle and structural characteristics of the three hydraulic return circuit systems of the component van for IPF-85B-2 concrete pump.
介绍了IPF-85B-2泵车中混凝土泵送部分3大液压回路系统的组成、工作原理及结构特点。
The selection of plan of super small size S band FM transmitter, its circuit design and structural arrangement are introduced, and the stability and quality of the transmitter are also analyzed.
介绍S波段超小型调频发射机方案的选择、电路设计、结构安排，并对该发射机的稳定性和质量进行了分析。
A 150MVA/220kV high impedance transformer is calculated by finite element software of leakage field. The short circuit impedance, winding eddy loss, structural part stray loss and short circuit electrodynamic force are analyzed.
利用漏磁场有限元软件对150MVA/220kV高阻抗变压器进行计算，并分别就短路阻抗、绕组涡流损耗、结构件杂散损耗和短路电动力进行分析。论文由如下三部分组成。