irregular chattering不定: indefinite; indeterminate反跳: bounce; bound; knock-on; imp ...静不定反力: statically indeterminate reaction反跳: bounce; bound; knock-on; impingement; impinging; [电学] bounce-back不反跳: dead stroke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:不定反跳,即可在微信中查询翻译