liner beam detector光束: light beam a surname探测器: finder; detector; seeker; so ...光束线型感烟探测器: linear beam type smoke detector红外光束线型感烟探测器: infra-red beam line-type smoke detector激光光束线型感烟探测器: laser beam line-type smoke detector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:光束线型探测器，即可在微信中查询翻译
