英语词汇waste sand and gravel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	waste sand and gravel
释义	waste sand and gravel 简明释义废砂石网络释义 1 ?废砂石废砂石双语例句 1 The process includes the waste purification from oil emulsion in Tilted-Plate Separator and the suspension separation in the downward-flow sand-gravel filter. 处理方法包括使用倾斜盘式分离器分离油乳化剂，使用下流式砂砾过滤器分离悬浮颗粒物。
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