空气启动 meaning in English

air start

Testing research specifies that mpt can reliably start up for ar , he , n2 , h2 , and air under the vacuum condition , and that ignition is easiest with ar , than with n2 , and most difficult with he
实验研究表明，在真空环境下，对于推进剂工质ar 、 he 、 n _ 2 、 h _ 2和空气启动可靠。 ar最容易启动， n _ 2次之， he最难；微波功率越大，越容易启动；并且在一定真空度范围内最容易启动。