英语词汇gravity roller怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	gravity roller
释义	gravity roller 简明释义重力辊道双语例句 1 Roller gravity conveyors move product without motor power by using a slope to convey products. Rollers have spring loaded axles for easy removal or replacement. 无需发动机推力，只需要一个倾斜的坡度就可运输产品。
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