1·Since the internal teeth sleeve for the gear coupling is floating with the sun gear in the planetary-stage, coupling gear is made of alloyed steel.
由于齿轮联轴器的内齿套也随行星级中的太阳轮一起浮动，所以联轴器齿轮也采用合金钢材料来制造。
2·The series of welding wires are mainly suitable for welding important low carbon steel and low alloyed steel structure.
该系列焊丝主要适用于焊接重要的低碳钢和低合金钢构。
3·The series of welding wires are mainly suitable for welding low alloyed steel structure.
该系列焊丝主要适用于焊接低碳钢和低合金钢结构。