chronotropic action变速: change speed; shifting; vari ...作用: act on; affect加速作用: accelerating action; accelerating effect; acceleration; acceleratory effect减速作用: decelerating effect; retardation快速作用: fast-acting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:变速作用,即可在微信中查询翻译