hollow section的意思|示意

空心截面 ... hollow brick 空心砖 hollow section 空心截面；空心型钢... hollow beam 空心梁 ...

空心型钢 ... hollow core中空心 hollow beam空心梁 hollow section空心截面；空心型钢 ...

空心管 ... hollow core flush door 空心门；空心平面门 hollow section 空心截面；空心管；“通” hollow section steel fence 空心钢栏 ...

通 ... hollow core flush door 空心门；空心平面门 hollow section 空心截面；空心管；“通” hollow section steel fence 空心钢栏 ...