mechanical (adj.)youdaoicibaDictYouDict[mechanical 词源字典]
early 15c., "of or pertaining to machines," from mechanic (adj.) + -al (1); of persons or human actions, "resembling machines, automatic" it is from c. 1600. Related: Mechanically. Mechanical-minded is recorded from 1820.[mechanical etymology, mechanical origin, 英语词源]