Translation of "Mechanical" in Chinese

Ours is a mechanical age.

我们的时代是机器的时代。

I got a piece of lead for my mechanical pencil from her.

我从她那里拿了一根自动铅笔芯。

The result of the invention of the steam engine was that human power was replaced by mechanical power.

机械力代替人力, 这是蒸汽机发明的结果。