A.0.617kg/m B.0.617kg/mm C.0.617t/m D.0.617kg/cm
A.6 B.7 C.6.5 D.8
A.凈長(zhǎng)B.錨固+凈長(zhǎng)C.凈長(zhǎng)+搭接D.凈長(zhǎng)+180°彎鉤