In a diesel engine, there is no spark plug. Instead, diesel fuel is injected into the cylinder, and the heat and pressure of the compression stroke cause the fuel to ignite.

柴油发动机内没有火花塞，取而代之的是将柴油喷入发动机气缸，然后压缩冲程在高温高压下引起燃料点火。

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About half of all aluminium castings are made using high-pressure die-casting (HPDC), in which a molten aluminium alloy is injected under pressure into a steel mould, or die.

大约有一半的铸铝工艺是高压模铸(HPDC)，在这种工艺中，通过压力将液态铝合金注入钢模，或模具。

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Mills start with a hard, strong construction grade wood like Douglas fir, and then preservative chemicals are injected under pressure to limit the effects of insect and rot damage.

米尔斯开始用硬，强固的构造像花旗松级木材，然后防腐剂化学品的压力之下，以限制昆虫和腐烂造成的损害减少注射。

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Next week, if all goes according to plan, a small mountain of snow will be melted, repeatedly sterilised and then injected in a high-pressure stream of near-boiling water to clear a bore-hole through the two miles of the ice-sheet.

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With the engine running, he can see on-screen how much fuel should be injected given X throttle pressure or Y coolant temperature.

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