长三甲火箭在国内率先采用了冷氦增压系统，冷氦压力调节器是冷氦增压系统中的最关键阀门之一。
The cryogenic helium pressure regulator is one of the most difficulty valve in cryogenic helium pressurizing technique which is applied first in LM3A rocket of China.
长三甲火箭在国内率先采用了冷氦增压系统，冷氦压力调节器是冷氦增压系统中的最关键阀门之一。
The cryogenic helium pressure regulator is one of the most difficulty valve in cryogenic helium pressurizing technique which is applied first in LM3A rocket of China.
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