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我厂生产的X1105W柴油机中的呼气阀支承板(见图1)的宽度原为38毫米,外协加工时采用弯曲、成型、冲孔三道工序。为了改进柴油机的性能,支承板的宽度由
The width of the exhalation valve support plate (see Fig. 1) of the X1105W diesel engine produced by our factory was originally 38 mm. The process of bending, forming and punching is used for the external processing. In order to improve the performance of diesel engines, the width of the support plate consists of