ããæ®é碳é¢ãåéé¢æ ç¼é¢ç®¡ç论éé计ç®å
¬å¼ä¸ºï¼
ããW=0.02466ï¼D-Sï¼S
ãã注éï¼æ¯ç±³éékg/m=ï¼å¤å¾-å£åï¼*å£å*0.02466 ï¼åä½å毫米ï¼mmï¼
ããæ¯å¦ï¼20#æ ç¼é¢ç®¡ Ф133*5çæ¯ç±³éé为ï¼
ããkg/m=ï¼133-5ï¼*5*0.02466=15.782
å 为1ç±³çéé为15.782åå
ï¼æ以1å¨ï¼1000åå
ï¼éç20#æ ç¼é¢ç®¡é¿åº¦ä¸º1000/15.782=63.363ç±³
温馨提示:答案为网友推荐,仅供参考