܃(yu)ɑ(yng)ڶN(chng)҃(ni)bòLc۲L(fng)׃Ҫo(h)ȫĈ(chng)m䓻AzȰȫҪ{(dio)(ji)o(h)[˽r(sh)ĥɰc{(dio)ⲣá˽⿹ݗ䲣cߜزЩN(li)Ո(qng)һݗ䲣ֳЩ(li) ݗ䲣 ǏVxW(xu)һN.ݗ䲣ݗ䲣. ٷݗ䲣 Ҫnj(du) 侀X侀зdzIJ.(dng)侀X侀M(jn)o(h)r(sh),ڲ(ni)a(chn)Ч(yng)ؓ(f)ӌ(du),ͬr(sh)a(chn)l(f)B(ti)ɑB(ti),ʹ 侀X侀pС,½,˷o(h). (dng)ݗ䲣ܶӕr(sh),Ҳ(yng).侀IJܶͨС4.5g/cm