in-range indicator在: exist; be living射程: range; reach; throw; flights ...内: inner; inside; within指示器: indicator; pointer; director ...在射程内指示器凸轮: cam for in-range indicator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:在射程内指示器，即可在微信中查询翻译
