A、0.05毫米,0.02毫米; B、0.1毫米,0.07毫米; C、0.05毫米,0.03毫米。
A、0.1~0.2毫米; B、0.2~0.3毫米; C、0.05~0.1毫米。
A、500℃左右; B、800℃左右; C、1200℃左右。