Adoption of different selecting operation has direct effect on progressive process.
采用不同的选择操作直接影响着进化过程。
Understanding the progressive and multicenter formation of nodular goiter, properly applied operation and regular postoperative TSH suppressive can effectively prevent recurrence.
认识结节性甲状腺肿结节多发性特点，规范化手术和术后规律TSH抑制治疗可有效预防复发。
Use constructional type of progressive dies, change present one step operation of single die construction for two-step blanking, i. e, first step semi-blanking, second ejecting material.
用级进模结构形式，改现行简单模结构的一工步操作的冲裁为两工步操作：第一工步为半冲裁，第二工步为推料。
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