The invention relates to a protective device combined by fabricated explosion-protection wall and turnover road needle, belonging to the structure engineering field.
本发明装配式防爆墙和翻转式路刺组合防护装置属于结构工程领域。
2
Capture a vermin swiftly to field, the tail poisons needle match weapon.
飞到田间捉害虫，尾巴毒针赛刀枪。
3
The stress field in the composite fabric which made by needle punching during tensile test, and the difficulty of calculating the stress - strain property are analyzed from the fabric structure.