Adjusting the cold gas fraction can control the performance target of vortex tube with fixed other parameters, which offers some referring data for practice applications of vortex tube.
在其它参数一定的情况下，可以通过调节冷气流分量来改变涡流管的性能指标。为涡流管的实际应用提供了一定的参考数据。
In this paper, the site and the sampling measurements for thermal insulation performance of walls and ceiling of an assembly cold store are described, and the test data is given.
本文介绍了组装式冷库围护结构保温性能现场测试和取样测试的方法与实测数据。
Presented in the paper is an introduction of the rotary pointing machine for steel pipe cold drawing covering such aspects as working principle, major technical data as well as performance advantages.
介绍了研制的回转式钢管冷轧头机工作原理、主要技术参数及优点。
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