downstream excursion顺流: fair current; fair tide down ...偏移: shifting; deviation; excursi ...量: measure capacity偏移量: offset; side-play amount; side-play mount位移量，偏移量: displacement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:顺流偏移量，即可在微信中查询翻译
