Because the mechanicalline-shaft control mode hardly provides quick response for the three requirements mentioned above, it has been replaced by the section-drive control mode.
He stood at a whirring line all day, every day, making the same tiny mechanical motion with his wrist, for 20 pence an hour.
为了每小时挣20便士,他整天站在旋转的生产线旁,用手肘做着同样的微小机械动作,天天如此。
3
Breaking down food, absorbing nutrients, and expelling of waste requires chemical processing, mechanical mixing and rhythmic muscle contractions that move everything on down the line.