查询词典 gases

Firstly, the condensation heat transfer of steam-air mixture on the outside of a horizontal smooth tube and four square thread tubes is studied experimentally, and then, the condensation heat transfer on axisymmetrical surfaces as well as vertical plates of any kind of vapors containing noncondensable gases is analyzed theoretically.

本文作者先实验研究含空气的水蒸汽管外冷凝时水平光滑圆管和强化换热圆管的传热特性，实验时控制主流混合气体的压力和空气的质量成分，并探讨建立实验关联式的方法；然后对含不凝气体的蒸气在竖直平板和轴对称壁面上冷凝换热进行理论分析。

More experimental data of condensation heat transfer coefficient, especially ones obtained at some determined pressure of mixtures and concentration of noncondensable gases, are required in order to make a data bank. Therefore, the experiment is arranged for steam-air condensing on the outside of a horizontal smooth tube, and 405 data have been obtained for the pressure of the bulk mixture covering 0.1～0.5bar and the mass fraction of air 0.3%～10.0%.

得到了一些重要结论，尤其是首次得到了&同样含量的空气对压力较高的混合气体冷凝换热的削弱作用较小&、&蒸汽侧冷凝换热系数近似与空气质量成分的对数成正比关系&、&空气含量的增加对蒸汽侧冷凝换热系数的影响随壁面过冷度增大而减小&及&管内冷却水流速取值范围的上、下限随管外蒸汽侧空气含量的增大而减小&等结论，并验证了在本文实验范围内&蒸汽侧冷凝换热系数与相同温度下纯净饱和蒸汽凝结换热系数的Nusselt理论预测结果的比率随壁面过冷度增大而减小&的数值分析结论〓。

The steam side heat exchange is a forced convective film condensation process of the flowing vapor, containing noncondensable gases. The flow filed and heat transfer behavior vary sharply along the cooling surface.

汽侧的凝结换热是存在不凝结空气的汽气混合物的强迫对流膜状凝结换热，流动与传热特性沿冷却表面变化剧烈。

As for the mesh screen type, its volume multiplied by 100% its porosity was the desirable filling amount. Having considered the forgoing findings, the researchers add up the amounts of the above two types as the filling amount of the composite micro structure, with the filling fluid being acetone. In fabricating the heat spreader, a copper pipe is added to serve the filling purpose. What is more, because the manufacturing process is not carried out in a totally clean environment, there is some noncondensible gas left, which will have a negative effect on the performance of the heat spreader. Consequently, the copper pipe has to be reserved so that the exhaust gases can be evacuated after the filling is done.

Kempers 文中可知，沟槽结构之填充量以微结构体积之80%为最佳，网格结构则是以网格体积乘上孔隙率(porosity，φ)之100%为最佳，故本研究便以两者之加总做为复合式微结构之填充量，填充液为丙酮；在均温基板之制造程序中，会加装一铜管做充填之用，且而由于制造过程并非于一完全干净之环境下完成，故板内会有一些不利于均温基板作用之非凝结性气体noncondensible gas (NCG残留，因此铜管需保留一定的长度，以方便充填完成后将废气排出之用。

Nonexplosive gases; a nonexplosive fuel .

不会爆炸的气体；不会爆炸的燃料。

There should be a validated method of backflow prevention in the line supplying the filling area for nonmedicinal gases to prevent contamination of the medicinal gas.

为预防对医用气体的污染，非医用气体的灌装线必须有经过验证的阻止回流的方法。

There should be a validated method of backflow prevention in the line supplying the filling area for nonmedicinal gases to prevent contamination of the medicinal gas.

医用气体的污染，非医用气体的灌装线必须有经过验证的阻止回流的方法。

Many occupationally induced respiratory disorders can be reduced or controlled through a variety of strategies aimed at reducing the burden of inhaled particles and gases.

许多因职业因素诱发的呼吸系统疾病可以通过一系列减少吸入性颗粒和气体的防治战略而得到控制和减少发生。

The Oxy units will monitor for residual 02 levels in the off gases of the oxidation reactor, a crucial measurement in the refining process that requires high levels of accuracy and reliability to ensure critical safety levels are maintained.

这四台分析仪将对氧化反应堆的废气残留02级进行监控，这也是提炼过程中的关键性测量，提炼过程需高度精确可靠，确保严格的安全等级。

Manufacture of medicinal gases should comply with the basic requirements of GMP, with applicable annexes, Pharmacopoeial standards and the following detailed guidelines.

医用气体的工业制造必须按GMP的基本要求及相应的附件、药典标准和下述具体的原则。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。