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trunk main中文是什么意思

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用"trunk main"造句"trunk main"怎么读"trunk main" in a sentence

中文翻译手机手机版

  • 【电学】中继干线。

例句与用法

  • Water samples are taken regularly throughout the entire supply and distribution system . the sampling points include water treatment works , service reservoirs , trunk mains , connection points and domestic taps . the data from these samples are checked against the world health organization s guidelines for drinking - water quality , which were developed by experts from around the world
    在整个供水及输水系统中,有关人员经常从滤水厂、配水库、输水干管、供水接驳位置和用户水头抽取样本进行化验,鉴定化验数据所显示的水质是否符合世界?生组织所订定的饮用食水水质准则。
用"trunk main"造句  
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