结果表明：（1）机械加工表面微观形貌主要包括：变形层、应变线、皱折、拉扯和白层等特征；
The results show that: (1) the mechanic surface micro morphlogy mainly includes deformation layer, strain line, fold, tear and white layer.
这次强降水与中尺度切变线、雷暴高压和中尺度气旋等中尺度系统关系密切，为一次中尺度暖式切变线暴雨过程；
The heavy rainfall is dominated by a mesoscale warm shear line, having a closed relationship with a mesoscale system composed by mesoscale shear line, thunderstorm high and mesoscale vortex;
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