常见例句Q8:main material of floorbeam hangers should not be coped or notched. built-up hangers should have solid or perforated web plates or lacing. 橫梁吊杆的主材料不應搭接或有凹口。裝配好的吊杆應該有實心或鑽孔的腹板或支撐。 返回 floorbeam