介绍了汽车真空助力器前外壳成形工序和切舌模具，论述了模具结构特点和工作原理。
The shape of the front crust of the car vacuum booster is complex and it needs many working steps to achieve the part.
本实用新型涉及的是汽车底盘制动系统部件结构的改进，特别是涉及到一种真空助力器带制动主缸储液罐。
The utility model relates to an improvement on the component structure of the chassis braking system of vehicle, in particular to a vacuum booster band brake master cylinder fluid reservoir.
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