GB/T 9239.21-2019机械振动转子平衡第21部分:平衡机的描述与评定国家标准
英文:Mechanical vibration—Rotor balancing—Part 21: Description and evaluation of balancing machines GB/T 9239.21-2019介绍: 国...
英文:Mechanical vibration—Rotor balancing—Part 21: Description and evaluation of balancing machines GB/T 9239.21-2019介绍: 国...