When most people think about gas masks or respirators, what they usually envision is a tight-fitting plastic or rubber face mask with some sort of filter cartridge.
大多数人想到防毒面具或呼吸器时，脑海中呈现的是一件配有某种过滤罐的、塑料或橡胶材质的密闭面具。
Through nonlinear fitting on clastic coal core gas desorption laws in Jiedong mine, compared each desorption model of the loss to the loss of volume by calculation methods.
通过对街洞矿区碎屑状煤芯瓦斯解吸规律的非线性拟合，对各解吸模式的损失量与用计算方法所求得的损失量进行了比较。
The algorithm of radiance spectra and transmittance spectra in measured region was proposed, and the method of retrieving gas concentrations with NLLS fitting algorithm was also proposed.
提出了辐射光谱、测量区域内大气透过率谱的算法模型，以及应用非线性最小二乘拟合算法实现气体浓度反演的方法。
By a molecular thermodynamic model for gas solubility, the molecular parameters for these gases have been estimated by proper fitting of the experimental data.
还应用气体溶解度的分子热力学模型通过拟合实验数据得到这些气体的分子参数。
The concrete pump pumping out of step the reason of is analyzed, and through fitting gas valve, the question is settled.
分析了混凝土输送泵泵送不同步产生原因，通过安装排气阀解决该问题。
The flared fitting is a connector in order the pipe line system, in which oil, water, gas and all kinds of corrosive materials are used as the medium.
扩口式管接头是以油、水、气和各种腐蚀性材料为介质的管路系统中的一种连接件。
The fitting gas combination can delay the fruit caducity, control fruit Browning and prolong fresh-storage period.
适宜的气体组合可延缓果实衰老，防止果实褐变且延长贮藏期。
The fitting of the experimental data shows that all Raman shifts decrease by one order exponential with increasing pressure, no matter the material is pure gas or mixtures.
对实验数据进行拟合发现，不管是纯组分还是混合体系中，气体的拉曼位移基本上是随压力增加呈一级指数递减。
This paper introduced the test, calculation and fitting of the surge curve of the coal gas compressor and anti-surge control strategy.
介绍煤压机喘振线的测试、计算和拟合以及防喘振控制策略。
This paper introduced the test, calculation and fitting of the surge curve of the coal gas compressor and anti-surge control strategy.
介绍煤压机喘振线的测试、计算和拟合以及防喘振控制策略。
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