manually operated mechanical switch手动: hand movement; manual operat ...坏: bad开关: Q-switching手动坏: armstrong's patent手动坏播种机: hand-oprated mechanical seeder下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:手动坏开关，即可在微信中查询翻译
