_165m3 ˮ
A۵Ҫ;VھиgҺwă\ݔ,ҪИI(y)ˎ댧wИI(y)ˎ桢PCBИI(y)ˎИI(y)ˎИI(y)ˎ桢̎ИI(y)ˎ켈ИI(y)ˎ桢Uˮ̎Sˎȅ^(q)Ĺ
Ac
1p|ߏ
A۵IJܶͨ1.8-2.0g/cm3,s䓲ĵ1/4-1/5,h(hun)ȡ300MPa,ȏȱ䓲ĸ
2ͻWg,ʹÉL
A۾Ѓ(yu)ͻWg,ڃ港gԽ|r,@ʾoȔMă(yu)Խ,ͬwԭϿͶNA}ЙC܄
3OӋԏ
Aۿͨ^׃ԭϵĽMϺ̓(ni)rYϻӵȸӺȽYˇĶ{(dio)䓃۵W,mͬ|lµҪ,_ă(yu)