机械作业 meaning in Chinese

machining operation

Operation quality of deep soil scarification and harrow
深松耙茬机械作业质量
Doing work : by hand or using machines
手工劳动还是机械作业？
Requirements for vibration hazards reduction of hand - held machines at the workplace
手持式机械作业防振要求
Dissertation on the operation safety management system of construction machinery
论工程机械作业安全管理体系
Body balancing function and the operation safety of potable forestry machinery
人体平衡功能与便携式林业机械作业安全

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