开闭 meaning in Chinese

lockage

Her lips would part and close over these significant teeth .
她的嘴唇不时地开闭在这两排惹人注目的牙齿上。
Automatic switching equipment , automatic control equipment
自动开闭?电装置
It ' s a drawbridge . they leave it up
是一座可开闭的吊桥，他们丢下它了
Livc late intake - valve - closing engine
进气门延迟开闭发动机
Litv late intake - valve closing system
进气门延迟开闭系统

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