浮子室通气孔的效用是补偿空气滤清器阻塞的影响。
The purpose of the float-bowl vent is to equalize the effects of a clogged air cleaner.
利用它对国产OFPI—220型SF_6断路器进行的计算结果表明，改变动触头排气孔位置及电弧对动触头内腔中气体的热效应可明显提高开断电流时灭弧室压力上升速度。
The results show that the position of the exhausting gas hole and the arc heat effects on the gas inside the hollow moving contact have obviously raised the pressure rising speed.
加大进气孔直径使进气中心涡流增强，燃油在一级燃烧室中蒸发量增加。
As the air inlet diameters increase, the intake central swirl is intensified and thus fuel evaporation in the first combustion chamber is improved.
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