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火箭发动机。
:: rocket motors.
Last Update: 2016-12-04
Usage Frequency: 3
Quality:
助推器/火箭发动机
boosters/rocket motors
Last Update: 2016-12-04
Usage Frequency: 1
Quality:
4.c.4. a. 氧化剂物质 -- -- 液体推进剂火箭发动机
4.c.4.a. oxidiser substances - liquid propellant rocket engines
Last Update: 2016-12-04
Usage Frequency: 4
Quality: