New type of Methane Generating Pit has been designed and studied. The Generator is Made of RM-PVC plastic plane.

为了探索农村小型、高效、使用方便的新型沼气池，对RM-PVC硬塑料沼气池进行了设计与研究。

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Besides, some problems including the used pit mud type, the change of pit mud in recycling use, and the materials of pit mud fermenter were also investigated in this paper.

同时，对夹泥发酵中所用的窖泥类型、窖泥在循环使用过程中如何变化、夹泥发酵器的材料问题等进行了探讨。

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This text explicates practical application on portable type pit geologic detecting instrument in pit geologic detecting through concrete example.

通过实例，介绍了便携式矿井地质探测仪在矿井地质探测中的实际运用情况。

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In December last year a man in a wheelchair suffered serious injuries after a mauling by a pit bull-type dog in Cheltenham, Gloucestershire.

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The dog was seized by police last week after a warrant was issued by Truro Magistrates' Court under the Dangerous Dogs Act to determine whether it is a prohibited breed, or a pit-bull type which has restrictions against it.

BBC: Injured heifer