Hydraulic Door Openeris designed to work together with BS63-B double-stage double-flow single-output hydraulic manual pump.

液压开门器与BS63-B型双级、双流量、单输出专用液压手动泵配合使用。

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Lots of experimental research has been done on the new double-flow lubricating-oil cooler which has mixed tube bundles, and it is found that such cooler has very strong heat transfer ability.

通过对新型混合管束式双流程滑油冷却器的大量实验研究，发现其具有很强的换热能力。

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He also did one fabulous thing: he decided that whatever calculations he made for the flow of sewage, he would double them, for the future.

他也做了件难以置信的事：他决定无论计算所得的下水道排水量是多少，他都要把它们翻倍，为了将来。

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For a major overhaul, consider installing photovoltaic cells on your roof, hydronic radiant heating in your floors, double-glazed panes in your windows and low-flow toilets in your bathroom.

FORBES: Julia Cosgrove

Verizon Communications Inc. (NYSE, Nasdaq: VZ) today reported a second consecutive quarter of double-digit percentage growth in year-over-year earnings results and significant increases in operating cash flow.

ENGADGET: Verizon issues Q2 earnings, touts $15.8 billion service revenues in Wireless

The review notes that all of the media player and internet controls are the same as the aforementioned device (Cover Flow, lists, zooming, etc.), though the touch allows you to "double-click" the button on the front of the device to bring up a music control-panel, no matter what application you're in.

ENGADGET: iPod touch gets its first review