When change cross fall and stroke still might maintain the surface of bed movement balance; the spring lays aside in box in vivo; the structure is compact, also it could obtain the final ore concentrate and the final debris onetime.是什么意思_When change cross fall and stroke still might maintain the surface of bed movement balance; the spring lays aside in box in vivo; the structure is compact, also it could obtain the final ore concentrate and the final debris onetime.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句