Medium pressure increases toward the valve seat surface and oblique cone sealing surface squeeze is tightening, sealing the better.

正向介质压力增大时阀板斜圆锥表面与阀座密封面挤压越紧，密封效果越好。

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The pollutants can be fiber fabric medium, finally captured by blocking the filter medium, make through the fabric of the medium pressure drop increase.

这些污染物可被纤维织物介质所捕获，最后堵塞过滤介质，使通过织物介质的压降增加。

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Medium pressure increases toward the valve seat surface and oblique cone sealing surface squeezed more tightly, sealing the better.

正向介质压力增大时阀板斜圆锥表面与阀座密封面挤压越紧，密封效果越好。

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That kind of offer can put pressure on small and medium-size business owners depending on their business model.

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First, Amazon must escape the commodity-pricing pressure zone brought on by the very medium, the Web, that made Amazon possible.

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Banks are also under increased government pressure to lend more to support growth and increase lending to small and medium-size businesses, which could further crimp profitability if bad loans start rising.

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