The research focuses on the defect equivalent analytical methods in building steel structure butt weld fusion and the effects of non-crack-type defects on the normal use of butt weld fusion.
本课题研究了建筑钢结构熔透对接焊缝中缺陷当量的分析方法和非裂纹类缺陷对焊缝正常使用的影响。
2
Building plaster is a building material with good properties, but its obvious defect of poor water resistance affects its wide application.
建筑石膏是一种性能优良的建筑材料，由于耐水性能较差影响了其广泛应用。
3
Objective To explore a method of repairing the multiple tissue defect and building the intrinsic muscle function of hand by combine grafting the intrinsic muscle of foot and other tissue.