求翻译：　该喷油器与闭式喷油器全然不同，确切地说，它是一种组合型的开式喷油器。以喷油器螺母，把喷油嘴和柱塞套拧紧在喷油器体上。柱塞与针阀作成一体(称为柱塞-针阀)。以其顶部凸肩与导向套夹固在一起。推杆下端的凸球面与柱塞-针阀上端的凹球面相配合，回位弹簧与安装在喷油器体和导向套上台阶之间，用以保持柱塞-针阀与推杆，推杆与凸轮（或摇臂头)之间的紧密接触。是什么意思？

The injector closed injector is completely different, or more precisely, it is a combination of open injector. To the nut of the fuel injector, injector and plunger sleeve Tighten the injector body. The plunger and the needle valve made one (known as the plunger - needle valve). Its shroud at the to

The Fuel Injector and closed fuel injector completely different; To be precise, it is a combination of the injector. In order to fuel injectors, the nozzle nut and set screw the fuel%2