Planning, organization and execution MECHANICAL equipment maintenance to ensure daily production operation.
计划、组织和执行机械设备维修，确保生产正常运行。
The next development in arithmetic was the invention of mechanical devices and machines to speed up the execution of arithmetic processes.
算术上的第二项进展是加速算术运算的机械装置和机器的发明。
The next development in arithmetic was the invention of mechanical devices and machines to speed up the execution of arithmetic processes.
算术上的第二项进展是加速算术运算的机械装置和机器的发明。
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