Experiments were carried out to investigate the sonic velocity of air-powder two-phase flow in a horizontal constant cross section duct.
实验研究了在水平等截面管道中空气－树脂粉两相流的音速。
Comparing with the two-phase equilibrium flow model of gas-particle flow, the apparent sonic velocities of two-phase flows are also obtained.
将实验结论与两相平衡流理论进行比较，建立了气粉流表观音速计算公式。
Based on the forming principle of choking phenomenon, an approach is proposed to measure the sonic velocity of air-powder two-phase flow.
基于壅塞现象原理，提出了一种测量气粉两相流音速的新方法。
Belt scales, blending scales, weigh feeders, flow indicator/detector, impact flow meter, sonic level controls, bob level controls, rotary level controls, capacitance level controls, conveyor safety protection products and metal detectors, etc.
提供产品：电子皮带秤、配料秤、给料机、流量探测/指示器、冲板流量计、称重式料/液位仪、声波料位仪、重锤料位仪、阻旋式料位仪、电容式料位仪、输送机安全保护装置及金属探测器等。
Shanghai Rotork Automatic Meter Co., LTD is an enterprise which specialized in manufacturing high precision intelligentized flowmeter and meter testing equipment. Our main products are intelligentized gas turbine flowmeter, intelligentized vortex flowmeter, intelligentized roots flowmeter, intelligentized flow integrating instrument, long distance meter reading, pressure transducer, differential pressure transducer, sonic nozzle gas flowmeter and so on. We have a variety of them and up to domestic advanced level.
上海罗托克自动化仪表有限公司是专业生产高度精密智能化流量仪、仪表测量装置等系列测控产品的企业，所生产的智能型气体涡轮流量计、智能型涡街流量计、智能型腰轮流量计、智能型流量积算仪、远程抄表器、压力变送器、差压变送器、音速喷嘴法气体流量标准装置等产品、规格品种齐全、技术达国内领先水平。
Experimental study on internal mixing sonic flow air blast atomizer for heavy oils
内混音速空气雾化重油喷嘴的试验研究
The jet flow oscillates as a square wave in a sonic oscillator and sine wave in a feedback oscillator.
研究发现，射流在音波振荡器中近似以方波的形态持续振荡，而在正反馈振荡器中以正弦波的形态振荡。
In order to obtain accurate sonic conductance of solenoid valve, polytropic exponent was used first time during the data processing in the discharge method for measurement pneumatic component flow rate characteristics.
为了准确测试电磁阀的音速流导，把多变指数引入放气法测试气动元件流量特性的数据处理过程。
According to the measured mid-sonic speed of the diesel oil and by using some methods for calculating discharge coefficient with approximate construction, this Paper calculates the fuel injection process in which sonic speed, density and flow coefficient vary respectively.
本文根据实测的柴油中音速和借助某些近似结构计算流量系数的方法，对喷油过程进行变音速、变密度和变流量系数的计算。
This paper studies, a new method for measuring flow rate characteristics of pneumatic solenoid valves, namely measuring sonic conductance C and critical pressure ratio b of pneumatic solenoid valves using discharge pressure curve of isothermal chambers.
对一种新的测试气动元件流量特性的方法进行了研究，即利用等温容器的放气曲线来测量气动电磁阀的音速流导C和临界压力比b。
Characteristic equation near the sonic line of axisymmetric flow
轴对称流中音速线附近的特征线方程
Teaching Research for Sonic Velocity One-dimensional Gas Flow Dynamics Course
气体动力学声速的教学方法研究与实践
Sonic nozzle flow prover
声速喷嘴流量检定装置
The determination of sonic speed in a two phase flow by the use of a pulse time difference method features simplicity, rapidity and precision.
使用脉冲时差法测定两相流中的声速，简便、快捷、精确。
The sonic nozzles are widely used in China as master meter due to its high-precision and low-cost characteristics, furthermore it is used to disseminate of the value of quantity for other types of gas flow meter.
由于高精度、低费用等特点，我国普遍采用音速喷嘴作为气体流量计量的标准表，用以对其他类型的气体流量计进行量值传递。
Although the ideal and real mass flow both influenced by humidity, the research of the humidity effect on the discharge coefficient of sonic nozzles had been focused on the ideal mass flow.
虽然湿度对实际及理想流量均存在影响，但现有湿度对流出系数影响的研究，基本集中在理想流量。
As the important parameter of the sonic nozzle, the discharge coefficient is determined by ideal and real mass flow going through the sonic nozzle.
流出系数是表征音速喷嘴流量特性的重要指标，其值由通过音速喷嘴的实际流量及理想流量共同决定。
The holes themselves have a restricting or stabilizing effect because flow may become sonic.
因为这时流动可成为音速流动，所以这些小孔本身有一种节制作用或稳定化作用。
The testing of transmission speed of sonic wave in the gas-liquid two-phase flow indicates that Wood formula can be used to calculate the transmission speed of sonic wave in the two-phase flow.
通过声波在气液两相流中传播速度试验证明，武德近似公式可以用来计算声波在该两相流中的传播速度。
Investigation on the Maximum Single Stage Loading Level of the Super - or Tran-Sonic Axial Flow Fans and Compressors
超跨音速轴流风扇、压气机级最大负荷能力研究