A.ΙL=Ιx B.ΙL=√2Ιx C.ΙL=2Ιx D.ΙL=√3Ιx
A.0.6t/m³ B.0.6~1.1t/m³ C.1.1~2.0t/m³ D.2.0t/m³以上
A.0.6t/m³ B.0.63~1t/m³ C.1.1~2.0t/m³ D.2.0t/m³以上
