In the paper, the high frequency pulse tube coolers (PTCs) developed for 80 K and below temperature application are introduced.
首先介绍了作者开发的可用于80 K及以下温区的高频脉冲管制冷机。
2
The paper briefly analyzed the DC-flows existing in double-inlet pulse tube cryocoolers (PTCs) and the measures for restraining them.
简要分析了双向进气型脉冲管制冷机中存在的直流现象及其抑制措施；
3
The effects of 2 g PTCs used are better than those of 4 g PTCs, and the yield of azelaic acid is raised as the amount of potassium permanganate increases.