downlineinserting coilinserting windinglow linesoff lineoff-line下: below; down; under; undernea ...线: thread; string; wire地下线: counterpoise conductor; underground line加下线: underlining眶下线: infra-orbital line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:下线,即可在微信中查询翻译