off lengths外: outside; external side定长: fixed length; selected lengt ...定长: fixed length; selected length◇定长摆 invariable pendulum外定向: exterior orientation外定子: outer stator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:外定长，即可在微信中查询翻译
