single stage

基本解释

Using single stage version PTC to reach the temperature below 30 K is a difficult task for high frequency pulse tube cooler.
采用单级高频脉冲管制冷机获得低于30 K的制冷温度是脉冲管应用的一个新方向。
Comparison between flash system and binary cycle shows, the former should be considered a relatively better choice of single stage energy conversion system for low-medium temperature.
对闪蒸系统和双工质循环的比较表明，前者对中低温地热发电来说，是一种可供选择的较好的单级能量转换系统。
Research has not, however, been able to clearly show any significant difference in the benefit of these two stages, and more recently they have been combined into a single stage called N3.
不过研究人员并不能明确指出这两个阶段对人体的影响有什么明显的区别，所以最近这两个阶段已经被合并成一个阶段，称为N3。

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