sheafn.束v.捆;束
sheaf of ring环层
sheaf carrier捆禾积运器,禾捆积运器
sheaf catalog书本书活页目录
sheaf of plane平面层
sheaf elevator禾捆升运器
sheaf of ideal理想层
sheaf conveyer禾捆输送器
Sheaf injection参附注射液
sheaf of planes平面束
sheafing torque摩擦转矩