发动机外壳 meaning in Chinese

an external case of engine
engine casing
external case of engine

Dc motor housing
直流发动机外壳
According to simulation results we decide the location of parting face and cooling system 、 the shape and location of runner and gating system etc . after that we take the az91d magnesium alloy shell of motorcycle engine as an example to proceed fine factors ( plunger injection speed 、 pouring
然后以az91d镁合金摩托车发动机外壳为例,进行五因素(压射速度、浇注温度、锻造时间、压射比压、锻造压力)四水平l16 ( 45 )正交实验,在普通压铸过程中关闭锻造功能。