ҹ˾dz߷ϩܲĵרҵҵ,ij߷ϩܲɿ,۸,ȫ.ڳ߷ϩܲں״,ܺ.Ħϵ(196N,2Сʱ)Ϊ0.219MN/m(GB3960).ĸֻͭ.رڻӡ۳ɳĵط,Ʒֵܸʾ.˶,ұعĥ.˾ϧÿһλͻĺ,ѭݻ˫Ӯԭ,ּº,õƷƷ,Խʵķ˿¸ߵ.ҹ˾ΪרҵӪ߷ϩܲĵĹӦ,Ҫ,ֱϵ,顢ϵĹѹٻݹ.