A common approach is hydrostatic testing-filling a closed pipeline section with water, then pressurizing the line to a specified pressure to check for leaks.

常用的试验方法为静水试压，即：向封闭的管段充水，然后把管段升压至规定压力，检查是否泄漏。

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Above the specified pressure, the intensity of band III has a transition which suggests the protein is denatured.

当压强超过某值后，第iii带强度发生了跃迁，蛋白质发生了明显的变性。

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The air content of freshly mixed concrete is determined by measuring the reduction in the volume of the concrete caused by the application of a specified pressure to the concrete.

通过对混凝土施加特定的压力，测定混凝土体积的减少量，以此确定混凝土拌合物中的空气含量。

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Normally I couldn't do that Vdp because this term would have p dV plus V dp, but we've specified the pressure is constant, so the dp part is zero.

一般情况下我不能这么写,因为这一项会包含pdV和，但是我们已经假定压强为常数，所以包含dp的部分等于零。

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