A.止住孔 B.圓孔 C.止裂孔 D.焊孔
A.Φ8~10mm B.Φ5~10mm C.Φ8~12mm D.Φ10~12mm
A.圓形補(bǔ)強(qiáng)板 B.平形補(bǔ)強(qiáng)板 C.方形補(bǔ)強(qiáng)板 D.角形補(bǔ)強(qiáng)板