
ç ‚è½®åˆ‡å‰²ç‰‡ähæ ?/h1>
产å“åž‹å·åQ?/p>
äº§å“½Ž€ä»‹ï¼š
- 产å“介ç»
ç ‚è½®åˆ‡å‰²ç‰?/a>
(1)¼‚¨æ–™¾_’度:常用¾_’度为:22#-80#,¾_’度¾l†æ—¶åˆ‡å‰²æ•ˆçއä½?
(2)ç ‚è½®¼‹¬åº¦:常用¼‹¬åº¦åQšP,Q,R;N,S;ä¸€èˆ¬ç”¨è¾ƒç¡¬ç ‚è½®,以凞®‘ç ‚è½®ç£¨æ?其硬度由¾l“åˆå‰‚多ž®?æˆåž‹å¯†åº¦,çƒ§æˆæ¸©åº¦åŠçƒ§æˆæ—¶é—´ç‰å› ç´ æŽ§åˆ¶çš?