所有润滑脂油嘴均安装在泵支撑板顶部。

All grease fittings are installed on top of the pump support plate.

这个油嘴的喷孔几乎被碳化物堵死。

The orifices of this nozzle are almost chocked up with carbide.

结果表明：节流孔板是电控共轨喷油器的重要构成部分，既控制着唢油嘴针阀的开启速度，义控制着喷油率的形状。

The results show that, as important components of electronic injector used in common rail system, orifices affect on the open rate of nozzle needle and injection rate shapes.