Forging defects of mould cavity non-saturate, crack, pucker and shearing edge avulsion, etc. on the astrictive clamps and operating scissors are studied by means of appearance and metallography.

采用外观和金相方法，对止血钳和手术剪锻坯出现的型腔填充不满、裂纹、重皮和切边撕裂等缺陷进行分析。

Treat correctly handle the stuttering and children in diseases such as astrictive stuttering, mostly because of infant's or mental stress, the boy suddenly about 4 percent, approximately 2 girls.

正确对待相处理幼儿的口吃和遗尿等疾病，口吃多是因幼儿模仿或精神突然紧张造成的，男孩大约有4％，女孩大约有2％。