down stroke

同根派生

The working principle and characteristics of hydrostatic transmission system with secondary regulation were introduced.The new system can match power perfectly during upstroke and down stroke.
介紹應(yīng)用靜液傳動二次調(diào)節(jié)技術(shù)的液壓抽油機(jī)的工作原理及節(jié)能原理,該系統(tǒng)能很好地解決上下沖程中的功率匹配問題。
Can you stroke him down? He is still very angry.
你能使他消消氣嗎?他還是非常生氣。
Have a glass of beer to rinse your dinner down.
喝杯啤酒把你吃的晚飯沖下去。
The machine must break down at this busy hour.
正忙的時候，機(jī)器偏偏又壞了。
The old man stared the uninvited guest up and down.
老人把不速之客上下打量了一番。