primary leakage一次: once测: survey; fathom; measure漏泄: untightness; inleakage; leak ...一次测算: declination一次测量仪表: primary instrument; primary measuring i trument; primary measuring instrument; primary meter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:一次测漏泄，即可在微信中查询翻译
