求翻译：首先燃油泵浦自油箱中将油料送至输油管中，输油管再将油料送至油轨内；而油轨由调压阀来控制燃油压力，并且确保送至各缸的燃油压力皆能相同。另一方面，调压阀也会借着泄压将过多的油料送至回油管而流回油箱中。而喷油嘴一端连接于油轨上，引擎ECU根据引擎运转状况会对喷油嘴下达喷油指令，喷油量是由燃油压力及喷油嘴喷油时间所决定。燃油压力在油轨处已由调压阀所控制，而燃油调压阀之压力是由歧管真空(引擎负荷)调整，所以ECU能控制的就是喷油时间，当引擎需要较多的燃油时，喷油时间就会较长，反之则喷油时间较短。是什么意思？

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First fuel pump the fuel tank to fuel line, fuel line and the oil inside the rail to rail; and by pressure-regulating valve is used to control the fuel pressure, and make sure that the cylinder head to the fuel pressure are identical. On the one hand, the pressure regulator valve will also take the