Since the technology of mixed and charged emulsion explosive truck was introduced into China by the Ministry of Metallurgical Industry in early 80's, it has been only used in mines.

我国自80年代初由冶金部引进炸药混装车技术以来，一直仅限于矿山使用。

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So, we often found that when some sites were waiting for the Ready-Mixed concrete truck, many Ready-Mixed concrete trucks were queuing for unloading in other sites.

因此，常常造成一方面部分有急需商品混凝土的施工工地在急切等待混凝土预拌车配送商品混凝土，另一方面，部分施工工地外混凝土预拌车排队等待卸料。

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The truck is used to suck fecal, sewage, mud, and liquid mixed with tiny granules.

用于抽吸粪便、污水、污泥浆和混有较小悬浮杂物的液体。

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At the Aiken County truck plant, 400 of the 560 acres are given up to mixed-pine forests, and the company has planted tens of thousands of native and threatened longleaf pines, which can grow to 90 feet.

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