slow roll vector慢: slow滚动: roll; trundle; rolling; volu ...向量: vector; vector quantity滑动向量: linienfluechtiger vektor sliding vector; slip vector活动向量: activity vector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:慢滚动向量,即可在微信中查询翻译