operated by power from an engine 机动的；机械驱动的；机械的 a mechanical device/toy/clock 机械装置／玩具／钟表 mechanical parts 机械部件
relating to machines and engines 机器的；机械的；发动机的 - (often disapproving)
(of people’s behaviour and actions 人的行为或行动 done without thinking, like a machine 机械般的；呆头呆脑的；无思想的 a mechanical gesture/response 机械式的手势／回答 My work has become mechanical—I could do it in my sleep. 我的工作变得机械化了，我可以在睡觉时做。
connected with the physical laws of movement and cause and effect (= with mechanics 机械的；机械学的 mechanical processes 机械过程
(of a person 人 good at understanding how machines work 擅长于机械原理的
Word Originlate Middle English (describing an art or occupation concerned with the construction of machines): via Latin from Greek mēkhanikos (from mēkhanē, from mēkhos ‘contrivance’) + -al.