Some stratification exists in the spray produced by any liquid propellant injector. 由任何液体推进喷注器所产生的喷雾都存在某些成层现象。
The application of a pressure difference across an injector does not cause an immediate velocity response of the liquid propellant. 经过喷注器的压降发生变化时并不马上引起液体推进剂速度变化。