Applying thermal mass flowmeter to measure gas mass flow directly.
应用热式质量流量计直接测量气体质量流量。
The characteristic of gas mass flow meter is introduced. The flow sensing principle and the installation of this flow meter are also described.
介绍了气体质量流量计的特点，并对其工作原理和安装也作了详细的阐述。
This paper introduce gas Mass Flow Controller principle of operating application for core permeability detection and some factors that influence its test performance.
本文介绍气体质量流量控制器的工作原理和在岩心渗透率测试中的应用，以及影响其测试性能的几个因素。
The paper introduces a new kind of vortex gas mass flowmeter, which can measure gas mass flow by testing the vortex frequency and the horizontal varying lifting force.
介绍了一种利用检测漩涡频率和横向变动升力的方法测量气体质量流量的漩涡式气体质量流量计。
It integrated temperature and pressure sensor with vortex sensor, and it realized the accurate measurement of mass flow through the compensation of gas density.
它将温度、压力和流量传感器融为一体，通过对气体密度进行补偿，实现了精确的质量流量测量。
Based on principle of mass conservation, this paper sets up mathematical model of gas water two phase steady flow.
从渗流力学的基本原理出发，基于质量守恒原理，建立了气水两相地层稳定渗流的数学模型。
The limit of accuracy is based upon the quality of the mass balance data, meter calibrations, flue gas analysis, and air flow meter accuracy.
精确程度取决于质量平衡数据的质量、量表的校验、燃料气分析以及空气流量表的精度。
Connected with flow transducer outputting impulsive signal, it can measure the instant flow, accumulative flow, mass flow of the liquid, the gas or the vapour.
可以与多种脉冲信号输出的流量变送器配套使用，精确地测量液体、气体和蒸汽等流体介质的瞬时流量、累积流量和质量流量。
The MOCVD system is specifically introduced, and the gas flow automatic control method based on the mass flow controller(MFC) and programmable logic controller(PLC) is studied and analyzed.
研究分析了基于质量流量控制器、可编程序控制器和触摸屏的自动控制系统气体流量自动控制方法。
Based upon above research, effects on the mass flow rate of powders of inventory of powders, fluidization gas velocity, reaction gas velocity and void of packed bed are discussed e.
讨论测量细颗粒质量流率的方法，以此为基础研究了细颗粒藏量、流化气速、反应气速及固定床的空隙率对细颗粒质量流率的影响。
It constructs a mathematic model to describe gas transient flow according to the mass, momentum and energy conservation law.
根据气体瞬变流动过程中所遵循的质量、动量和能量守恒定律建立描述气体瞬变流动的数学模型。
Two kinds of key sensors, hot-film mass air flow (MAF) sensor and universal exhaust oxygen gas sensor, for the AFR control are fully studied in this paper.
本论文主要研究空燃比控制中的两种关键传感器：热膜式空气质量流量传感器和宽带型废气氧传感器的动态性能。
All investigators in mass transfer assumed plug flow of gas in packed beds.
所有传递问题的研究者都假定在填充床层中的气体为活塞流。
The calculated results cover the time averaged gas flow field, species mass fraction and temperature distributions for the premixed reacting flow in the sudden expansion combustor.
模拟结果给出了突扩燃烧室内湍流预混反应流的气体时均流场、组分浓度场与温度场的分布。
The portable humidity generator had the function of automatic generating standard gas of different flow and dewpoint by using the microprocessor and the technology of mass flow controlling.
该便携式湿度发生器利用分流法湿度发生原理，采用微控制器和质量流量控制技术实现了自动发生不同流量、不同露点气体的功能，可为露点测试仪检定和校准提供动态标准湿度气体。
Based on the theory of gas percolation, law of mass conservation and hydrodynamics, basic mathematical equation of gas flow model was established.
依据瓦斯渗流理论、质量守恒定律和流体力学，建立了瓦斯流动数学模型的基本方程。
Instantaneous mass transfer of gas-microdroplet two-phase flow is one of the most important procedures in the field of chemical engineering, colloid science and environment science.
气雾两相流瞬态传质现象广泛存在于多相反应器、燃烧、空气污染物控制和大气运动等化工、环境和气溶胶科学领域。
This paper introduces a new measurement technique of gas-solid two-phase mass flow measurement.
介绍一种气固两相流固相质量流量测量新技术。
The stainless steel powder becomes finer and the size distribution is narrower with the mass flow rate and pressure of gas medium increasing.
随着气体介质流量及压力的增加，所制备的不锈钢粉末粒度越小，粉末的分布更集中；
Criterion for gas flow pressure loss is presented for rotating liquid film heat and mass transfer device.
提出了旋转液膜气液传热传质设备的气体压力损失的准则关系式。
The computational results show that deep aeration can get a better gas-liquid mix, and a higher gas flow rate can improve the mass transfer between two phases.
结果表明：深层曝气能够让气液得到更充分的混合；提高空气流量（即气泡流速），也能大大改善气液混合。
Cell model is employed to set up the mass balance of 8 gas components, solid flow, carbon flow and total energy balance.
建模采用“小室模型”方法，将气化炉分为多段，分别建立8种气体成分、固体和碳质量平衡以及总体能量平衡。
At a constant gas flow rate, the overall volumetric mass transfer coefficients increase with the rotational speed.
在一定的转速范围内，气相流速不变时，吸收系数随转子转速的增加而增加。
Solid mass rate at different gas flow is forecasted by using improved BP neural network in dense phase pneumatic conveying.
结果表明，BP网络能对不同实验条件下的固体质量流率进行较好的预测。
With increase of mass flow rate, solid-gas ratio increases first and then decreases.
随着煤粉的输送流量的增大，固气比先增大后减小。
With increase of mass flow rate, solid-gas ratio increases first and then decreases.
随着煤粉的输送流量的增大，固气比先增大后减小。
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