We'd better check the side valve.

我们最好检查一下旁阀。

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So we improve the old truck gasoline engine with side valve by raising its compression ratio to 7.2: 1 by using partial spherical chamber. The intake system is also improved.

为此，对一部分解放牌侧置气门汽油机的燃烧室改造为球形，提高压缩比到7.2：1，并改进进气系统，从而使功率、扭矩和燃油经济性都有所提高。

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He picked up a ball-peen hammer, leaned on the passenger-side fender, and tapped twice on the EGR valve.

他拿起一个榔头，在右侧挡泥板前弯下身，轻轻敲了两下废气循环阀。

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Jack Lief , Arena's chief executive, points out that the heart valve side effects were rare, and that a big clinical trial could settle the issue.

FORBES: Fat Chances

From the other side, greens are worried that the safety valve is too low.

ECONOMIST: Energy policy and the environment

It was feared that the lake would pour over the top and burst down the valley but fortunately the river gouged out an escape route along the side of the landblock which acted as a safety valve and limited the damage.

ECONOMIST: From the archive