n. orifice
misc. metering jet
进入蒸发器的制冷剂由一个阀或量孔控制。
The entrance of refrigerant into the evaporator is controlled by a valve or an orifice.
试验结果表明较大的A、B量孔尺寸差值和高的共轨压力，可以获得较好的喷油器开启响应特性。
The test result shows that by using bigger dimension difference of control hole A and B and high common-rail pressure the better open response of injector can be achieved.
汽车发动机用的化油器的组成通常包括燃油室、阻风门、怠速量孔、主量孔、空气节流喉管和加速泵。
Carburetors for automobile engines usually contained a storage chamber for liquid fuel, a choke, an idling jet, a main jet, an airflow restriction, and an accelerator pump.
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