It is indicated the said crack is due to too small shrinkageratio of the compacting die.
指出,拉丝模内孔之所以产生裂纹,是由于压模收缩比太小的原因。
2
The results show that, after soaking by acid rain, dry heat shrinkageratio of the leather increases, and the dry thermostability decreases.
结果表明:经过酸雨浸泡后,加脂皮革的干热收缩率均高于未浸泡试样,耐干热性能下降。
3
Ultra light high strength, thermal insulation, waterproof, and the surface adhesion strong, activist and arch, not crack, dry shrinkageratio as well as good.