Head flow meter is one most widely used in present industry.

节流式流量计是目前工业上应用得最广的一种流量计。

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The cause of occurrence of power overload and the unstable curve of head-flow volume for low rate ratio pumps was analyzed in this paper. Some methods, then, were presented to solve the problems.

分析了低比转数离心泵出现不稳定扬程-流量特性曲线及功率过载的原因，提出了相应解决办法。

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Not all of these benefits would flow from removing head-office duplication and overlapping operations such as mines and the railways linking them to ports.

ECONOMIST: BHP Billiton and Rio Tinto

With its head start, Cheniere expects to flow gas by the end of 2015, beginning annual exports of up to 800 bcf per year for 20 years.

FORBES: LNG Export Economics: A Look At Frontrunner Cheniere

Wells in shale plays have to undergo a process known as fracturing to boost the porosity of the rock and to make oil and gas flow to the well head.

FORBES: Baker Hughes Ramps Up Oil Fracking On Low Natural Gas Prices