第1个回答 2011-03-19
yaokan bianyaqigongluduoda yiban100wzuyi tiexinjiemianji25 yulianghenda anjingyangongshijisuan daociluan b=10000 meifuzashu no=1.8 chujizashu no=220x1.8=396 daox ianzhijing d=0.55 ciji d=1.5mm tiexinkongjianjiaoda xianjing d yidabuyixiao