a(chn)Ʒg(sh)c(din)
1,Bm(x)Ⱥg(sh)ҪǞˏa(b)Bm(x)܈g(sh)yҎ(gu),Сa(chn)һ{(dio)ԇϸM(jn)һ~Ƭ;ȶаl(f)¼g(sh)
2,Bm(x)Ⱥg(sh)a(chn)~ƬcBm(x)܈g(sh)a(chn)~ƬһӞݾBm(x)ΑB(ti)c(din)dz;ȸ,غc(ni)һ,
3(xing)~Ƭͼg(sh)в#,ЧcBm(x)܈g(sh)ஔ(dng),
Ԕ(x)Ҏ(gu)2-5mmȣ䓌Ȳ30mm,6-10mm,䓌Ȳ50mm10-20mm,䓌Ȳ80mm