查询词典 gas refrigeration

The oscillation performance of jet, as oscillation frequency, is the essential data for designing the fluidic device, which is also the key factor that influence the coupling effect of fluidic device and receiving tube. This paper does experiment on the oscillation availability and frequency of feedback jet-oscillation gas wave refrigeration. As a conclusion, the jet oscillates only in a certain range of geometrical sizes and operating conditions. Under the condition of high pressure ratio, the frequency of the jet"s oscillation is only affected by the feedback tube"s length and chamber remarkably. Under the condition of low pressure ratio, the frequency descends with rise of the pressure ratio.

本文将跨音速正反馈射流振荡器与接受管耦合，对耦合后的射流振荡气波制冷机的可振性、振荡频率以及它们的影响因素作了实验研究，得出如下结论：射流只在一定的操作条件和几何结构尺寸范围内才能稳定振荡；射流的振荡频率在较高压比下只受反馈管长和反馈管容腔大小的显著影响，在小压比下随压比的增大而增加；其它结构尺寸和操作条件只影响可振性。

Dollars. Company advanced production equipment to detect pesticide gas chromatography equipment, comprehensive strength, Japan has imported humidors barbecue machines, ultra-low temperature tuna refrigeration equipment, is currently the world's most advanced.

公司生产设备先进，检测农药气相色谱设备齐全，综合实力雄厚，拥有日本进口的保湿烧烤机、超低温金枪鱼冷冻设备，是目前国际上最先进的。

Be based on relevant theory, those who built crucial material vent one's anger characteristic model, of the choice of crucial to refrigeration machine material, craft that remove gas optimize, the control that pollutes failure mode has referenced value.

基于相关理论，建立了关键材料的出气特性模型，对制冷机关键材料的选择、除气工艺的优化、污染失效模式的控制有参考价值。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。