短語詞組短語valve -opening time [機(jī)]氣門開啟時(shí)間opening time for inlet valve 進(jìn)口閥開啟時(shí)間Intake valve -opening time 進(jìn)氣持續(xù)角Exhaust valve -opening time 排氣持續(xù)角 返回 opening valve time