-
Said invention is simple in structure, high in propellant efficiency and good inmovement continuity.
本发明结构简单,推进效率高,动作连续性好。
youdao
-
Said invention is simple in structure, high in propellant efficiency and good inmovement continuity.
本发明结构简单,推进效率高,动作连续性好。
youdao