1ůʹБÑעЩ?
𣺢هôײڇ˽Բɢ۳ܺd≥2T/m2摪|oݵbʯĻͺϵذއߜI(y)߱|ЙCԡҺDzů(ji)עMˮB(yng)o
2Ժĵůa(chn)ƷF(xin)B©Ҫԭʲôԓ̎?
F(xin)B©a(chn)ԭҪʹ|εļӟĿ͑ů˾ۺܾS깩ůfů\л̎àB(ti);F(xin)}Ǽӟ͉ܵܲ͟ԓQӟ䁡Ñb˾؟Σb˾Ҳܲa(chn)S؟p(zh)V߀茣ДǷܶZSСr(sh)~ܸһůb˾@rаl(f)ӖǑKʹġ
⣬ҲųÑڵůRøߜwpĹܵMˮض^ߌ´ι^ѡǾҪԭҵ؟ˣ֓pʧMaxдI(y)a(chn)ĹܲĺҎ(gu)İb˾ȞҪ
3
ˮůϵy(tng)ͨ{ԇҪcʲô?{ԇ?
ϵy(tng)ͨ{ԇǴ_Mһ˺͙zOӋcʩ|һҪh(hun)(ji)JMԇ\Еrμӟˮؑ^һҪƽ(wn);_ضһ׃m^
ʼӟr{ԇˮؑƽˮضȑڴˮrh(hun)ضȸ10Ҳ32Bm(x)\48СrԺÿ24Сrˮ3ֱ_OӋˮضڴ˜ضÿMˮˮBӵļӟ·M{(ji)ֱ_OӋҪ
һƪ
Bm(x)Ї߃rֵƷ50ИI(y)
һƪ
ůϵy(tng)ĂҪԭ