There are a lot of contact interfaces in engineering structures that can only hold pressure but not tension.

工程结构中存在着大量的接触界面，接触界面只能承压不能承拉。

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The evolution of blank hold pressure is determined by the effect of work hardening and softening during deep drawing process.

单位压边强度随温度的变化规律与拉深成型过程中材料的软化与硬化作用有关。

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The hydraulic system of injection molding machine is the representative example, it need to control cylinder speed and hold pressure, so it indeed to use pressure and flow rate multiple valve.

在注塑机液压系统中，要求能在注塑油缸运动的过程中对其进行速度控制和在保压过程中进行压力控制。 这就需要用到压力-流量复合阀来进行压力和流量的控制。

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The biggest hurdle was that the plastic had to be strong enough to hold the positive pressure of air pumped in, says Michael Metta, Sealed Air's technology chief.

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He has reluctantly given in to public pressure to hold a referendum on the constitution.

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The Irish government is under pressure to hold a referendum that it would struggle to win.

ECONOMIST: Britain had a bad summit, but the euro zone had a worse one