单词	primitive groove
释义	primitive groove 原沟
随便看	control valve support operating link control valve to check valve pipe control valve to operating chamber pipe control valve unit control valve variable control van connecting room control vane control vane fin control variable control variableCV control variable lf do control variable method control variable name control variable of program control variables control Variables from outside control variable technique control velocity control verb control verbs control verification control vertex control vertical synchronizing control vessel control vfr flight