气体测量

On the basis of the pressure correcting method about the measurement of bubble size distribution a photoelectrical capillary probe technique with a micro-computer on line was successfully used to study in detail the effects of various operating parameters such as gas rate, feed rate, feed concentration, NaCl concentration in solution, gas bubbler and gas bubbling state on bubble and foam bubble size distributions in foam fractionation column.

在已建立的光电毛细探头技术测定气泡尺寸分布的压力校正方法基础上，应用光电毛细探头微机在线测量方法，研究了各种操作参数，如气体流速、进料量、进料浓度、溶液中NaCl浓度、气体分布器以及布气状态等，对泡沫分离塔内气泡和泡沫气泡尺寸与分布的影响。

There are many kinds of sensors , and the gas-sensor is an important kind, whose theory is to make use of the variable of resistance under the sensitive gas condition, resulting in the change of electricity variable in the circuits.

传感器的类型有很多，而其中很重要的一种就是电阻型气敏传感元件，它的原理就是利用敏感电阻在气体中电阻率改变，从而引起电阻的变化进而通过电路中电学量的改变来测量敏感气体的存在。

The present paper focuses on the effect of spectral range on the detected characteristic absorption structure of O3, and the variation of differential cross section of O3 with the change in spectral range and the source of interference in different spectral range.

文章主要研究了在不同光谱波段O3特征吸收结构和差分光学厚度的不同，在不同光谱波段O3浓度反演的干扰来源以及影响程度，确定了实际检测时大气消光对不同波段光强的影响，最后通过对多种污染物标准气体进行了同时监测，计算出标准气体在不同光谱分辨率不同O3浓度时的测量误差，确定了对O3的最适用光谱波段范围。

This paper reports results of Tin doped fibre pumped by a semiconductor laser diode as an optical source for methane gas detection. The spectral characteristics of the Tm doped fibre pumped by the 788 nm laser diode is studied experimently and the fibre source is used in a correlation spectroscopy measurement system.

报道了以半导体激光器泵浦掺Tm3+光纤为光源的甲烷气体相关光谱检测系统，研究了788 nm波长泵浦下掺Tm光纤光源的一些光谱特性，并在实验上用这种光源及系统对甲烷气体作了测量。

While retrieving the column density of trace gases with the scattered sunlight as light source,it will be affected strongly by solar Fraunhofer lines,which is also called Ring effect.

被动DOAS中利用太阳散射光作为光源解析大气污染气体柱浓度时，会受到太阳弗朗和费光谱的"填充线"即Ring效应的强烈影响，尤其是对浓度很低的痕量气体，致使不易获取其浓度、影响其测量精度。

Selecting Distributed Feedback Laser Diode as light resource and the gas absorbing cell with fiber pigtail as its sensor, and using lock in amplifier to distill signal and harmonic measure technology to process that distilled faint signals, we design an instrument of remote and on-line measuring acetylene.

选用分布反馈式半导体激光器作为激发光源，带尾纤的气体吸收气室作为传感器的探测头，以及锁相放大器来提取信号，并通过谐波检测技术对所提取的微弱信号进行处理，设计了一套远距离在线测量乙炔气体的监测仪器。

Overcoming some drawbacks of previous methods for measuring gas-solubility, a new piston apparatus was established, in which the state equation of ideal gas was used to determine the amount of gas-dissolution.

针对已有测量装置及方法的不足，建立了一种基于理想气体状态方程来确定气体溶解量的新型精密活塞式装置。

And artificial olfaction system is a researching direction of sensory system simulation which has representative meaning and practical application value.

人工嗅觉系统可以实现对气体的测量，克服了传统传感器的诸多不足，更加准确的分析被测气体，适合更复杂的工作环境。

DOAS method used to obtain the column density of gaseous pollutant in the section plane of the plume emitted from source and the method of net flux calculation of gaseous pollutant from a certain area are described.

文章着重描述了获得污染气体柱密度的差分吸收光谱方法以及区域内污染气体净排放通量的计算方法，并构建了车载被动DOAS系统对北京市五环路以内区域的SO2和NO2排放进行外场测量，测得了该区域内SO2和NO2净排放通量分别为1.13×104和9.3×103 kg·h-1。

The reduction of the secondary flow-resistor network with renormalization involves dozensof transformation between star connection and triangle connection and hundreds of expressionsare used.

测量了人工林马尾松木材试件纵向、径向和弦向的气体渗透系数，并与试件气体渗透系数的计算结果进行比较，以验证针叶材三维流阻网络及其理论的准确性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。