Clutch pressure plate is a main part of an automobile.

离合器压盘是汽车的主要零件。

youdao

To reduce heat generation of the hydraulic system the main component pressure of the loader hydraulic system under different working conditions is tested, the pressure loss of each part is analyzed.

为研究热量产生的原因，从系统上减少热量的产生，测试了装载机液压系统在不同工况下各主要元件的压力点压力，分析了各部分的压力损失情况。

youdao

The reactor vessel constitutes the main part of pressure boundary of primary coolant.

反应堆压力壳构成了主冷却剂压力边界的主体。

youdao

Rises in the cost of non-seasonal foods put the main upward pressure on prices, though this was partly offset by supermarkets slashing the price of seasonal foods, as part of the ongoing supermarket price war.

BBC: UK inflation Oct