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lost motion 【機械工程】空動。

lost river

As there is lost motion in every kind of machinery , so there is lost motion in the grain market due to momentum , which drives an option slightly above or below a resistance level 每種機器都有空轉的情況,因此谷物市場當然也由于其運行在一個阻力水平上下很小的范圍內的動力而變成空轉。