可调实心钢转子
Adjustable solid steel rotor
轧制软钢实心轮
rolled mild steel disk wheel
钢心钢绳
baiying meteorological bureau
大庆油田科学研究设计院中心实验室
The Central Laboratory of the Scientific Research and Design Instituteof Daqing Oil Fie1d
倒立摆的虚拟现实实现
Virtual Reality Realization of Inverted Pendulum