It provides the basis for selecting reasonable oil pressure supply.

为选择合理的供油压力提供了依据。

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Take constant pressure supply water system of life area for example, this paper introduces the needs and realization of variable-frequence constant-pressure supply water system using PLC.

以生活区的恒压供水系统为例，介绍了应用PLC实现变频恒压供水系统的需求分析和实现过程。

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Repeated attempts to allow the species to recover have failed under the pressure to supply a market willing to pay tens of thousands of dollars for a single fish.

VOA: standard.2010.03.04

On top of that, demand for oil is growing in emerging markets like China, India and Brazil, putting pressure on supply.

FORBES: Magazine Article

And while the prices and associated margins are relatively high for these products, consumer demand continues to put pressure on supply and Apple continues to earn more profits on these products than competitors combined.

FORBES: Apple: Don't Miss the Next $200 Price Move

But consider the durable pressure on supply.

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