A 67-year-old male patient visited our emergency department...
athe weldable polymer material means a material which can be bonded by welding two parts made from the same or another material if at least one of the two parts is at an elevated temperature. 可焊的聚合材料意味可以通过焊接由同样或另一材料做的二份结合的材料,如果二个零件之至少一在高温。[tra...