zero span零: zero zero sign; nought零刀联线: zero knives linear零挡: zero span; zero step零导磁率隔离器: zero-permeability isolator零当量法: zero stoichiometric method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:零档,即可在微信中查询翻译