更新1:
是要日常用品的!!!
能量轉換.....
回答 (2)
2007-02-04 1:27 am
Examples are plenty, apart from motors, loudspeakers is one of the examples.
2007-02-03 8:14 pm
motor~
收錄日期: 2021-04-29 17:25:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070203000051KK01322