This paper introduced the advantage and characteristic of L-series roots blower, which could substitute the liquid ring pump in the process of hydrogen transportation.

本文介绍了L系列罗茨鼓风机在氢气输送过程中替代液环泵的优势与特点。

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The feds said Offill was a member of a pump-and-dump ring that targeted shares in companies like AVL Global Inc.

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To make a gadget called the Can Pump N' Pour, a circular hard plastic ring with a rubber cover that keeps the fizz in opened soda cans, Davison engineers went through 30 different versions with its own moldmaking machines before getting the shape right.

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It used to be that if you walked in the door of a Cleveland industrial pump distributor, the guy at the door would lug you a big catalog in a three ring binder and let you spend 15 minutes flipping through it to see which ones you thought you might like to buy.

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