Analyzed press technology characteristics of vent - windows of the car side board, designed a lancing - drawing compound die.分析了车厢侧板零件通风窗冲压加工的工艺特点, 设计了一副针对该零件加工的切口拉伸复合模....
Kinking endotracheal tube ( ETT ) is not an infrequent problem during general anesthesia.在全身麻醉插管病患中,气管内管弯折其实是常见的问题.The strands are in good condition and without broken wires, kinking and smooth surface.绳线状况良好并无断线 、 绞缠或磨平...