It is necessary to solve openning-tube sampling problem for the mass-spectrometer analysis of residual gases in sealed vacuum devices.
密封真空器件内残气的质谱分析，必须解决开管取样技术问题。
Methods: Active carbon tube adsorption and solvent desorption were used for sampling hexane and analysis was performed by GC(FID).
方法：以活性碳管采集空气中正己烷，用二硫化碳解吸后气相色谱（FID）测定。
A two-dimensional axisymmetric finite element model of sampling tube and sediments is built.
建立了取样管与沉积物接触的二维轴对称有限元模型。
Formation center tester (FCT) is made up of hydraulic power joint, double PACKER joint, opposing infuse joint, numeric pump exhausting joint, sensor joint and sampling tube joint.
钻井油气层测试器是由液压动力短节、双packer短节、反向注入短节、数字泵抽短节、传感器短节和取样筒短节组成的。
The factors affecting fine root measurement and its precision mainly included the quality and quantity of tube installation, sampling interval and quantity, and analysis technique of images, etc.
微根管观测精度主要取决于微根管安装的质量和数量、微根管取样间隔期和取样数量、微根管图像分析技术等。
Methods: Using stratified sampling method to determine the survey places, The schistosomiasis in people and livestock were surveyed by the methods of nylon bag incubation and top - tube incubation.
方法：用分层随机抽样法确定调查点。 用尼龙袋集卵孵化法、顶管孵化法分别对人畜进行查病，用系统抽样结合环境抽样法开展螺情调查。
Methods:Silica gel tube adsorption and solvent desorption were used for sampling of methacrylic acid and analysis was performed by HPLC.
方法：以硅胶管采集空气中甲基丙烯酸，用甲醇解吸后高效液相色谱测定。
GC analytical method for o-chlorotoluene in the workplace air using sampling by charcoal tube was studied.
研究炭管采集空气中邻-氯甲苯的气相色谱分析方法。
The flow model of single phase flow in the straight tube of the vertical tubular leacher was studied by using NaCl solution tracing and microcomputer sampling.
采用盐水示踪、微机采样来研究垂直管道浸取器直管内单相流的流动模型。
To improve efficiency and veracity of soil sampling in testing bulk density, the cutting ring method and in situ soil tube method were combined and a multi-segment in situ soil sampler was designed.
为了提高土壤容重测定中土样采集的效率和精准性，将环刀法和原状取土管法结合，进行了分段式原状取土器的研制。
The oil hole zoning and pedal locks, set on the tank tops, used for measuring the elevation and oil tube temperature and sampling, etc.
量油孔分带锁式和脚踏式，安装于油罐顶部，用于测量管内油品的标高和温度及取样等。
The key technique of the sampling machine lies in how to keep the pressure variety of the pressure-6 hours of the high pressure sample tube body not over 10%.
深海微生物取样器的关键技术在于如何保持高压采样筒体的压力——6小时的压力变化不超过10%。
The distribution of particle concentration in the cyclone tube was measured by isokinetic sampling method.
采用等动采样方法对旋风管内的颗粒浓度分布进行了系统测量。
By using isokinetic sampling method, the particle concentration distribution in the novel cyclone tube is measured and analyzed.
采用等动采样方法，对新型旋风管内的颗粒浓度场进行了测试与分析。
Based on the measurement of flow field, the particle concentration distribution in the PDC type cyclone tube was studied by isokinetic sampling method.
在流场测试的基础上，采用等动采样的原理，对PD C型旋风管内的颗粒浓度分布进行了全面系统地测试。
Aimming at the problems presented in application of flue dust sampling instrument with auto-pitot tube parallel measurement, a solve method is introduced. Practice indicates that it is effective.
针对自动皮托管平行测速烟尘采样仪在使用中经常出现的几个问题，提出了相应的解决方法，实际应用结果表明，这些方法具有很好的效果。
A sampling switch arranged on the gun tube can reduce the occurrence of dummy guns, thereby guaranteeing the effect of bird dispersing.
炮管上设置的取样开关还能减少哑炮的出现，从而保证驱鸟的效果。
A sampling method of passive diffusion tube for collecting formaldehyde in indoor air was established.
本文建立了被动式扩散管采集室内空气中甲醛的方法。
Chapter 4 mainly illuminates safety sampling technique, including theory of corer tube stability, qualitative analysis of parameters of corer releasing and a new type connection of plug pin.
第四章介绍了取样器安全性准则，主要包括保真取样器稳定性理论及取样器释放参数的定性分析及新型销轴式连接方式。
When using a common sampling tube, a formula for approximate calculation of the flow in the sampling tube is needed to meet the request of equi-speed sampling.
在使用普通型采样管时，为了满足采样现场的要求，应有一个与之相适应的等速采样流量近似计算公式。
A new detection tube for formaldehyde gas based on passive sampling has been developed according to the principle of the gas molecular diffusion and chemical adsorption.
新研制的甲醛被动式检气管是建立在气体分子扩散和化学吸收原理基础上的。
After being heated up and desorbed the sampling tube was led into a gas phase chromatography with a hydrogen flame detector for analysis.
采样管再经加热解吸导入附有氢火焰检测器的气相色谱仪进行分析。
This paper presents a method to realize the digital design and manufacturing of sampling tube by using a high-precision scanner to get a quick scanning scene.
现综述了医学领域中应用的剂量计的原理、胶片类型和材料组成、胶片特性、刻度方法、黑度扫描计系统及医学应用。
The inner end of sampling tube is one-sided slant wedge with the caliber of check valve;
采样管的里端头为与逆止阀的内口径呈上斜面的单面楔形；
The inner end of sampling tube is one-sided slant wedge with the caliber of check valve;
采样管的里端头为与逆止阀的内口径呈上斜面的单面楔形；
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