If user combines the two in actual operating process, frequency of mechanical rapping can be reduced and the impact on heating surface welded junction of mechanical rapping position can be relieved.
如用户在实际运行过程中两者结合使用，可减少机械振打的频率，减轻对机械振打部位的受热面焊口的冲击。
During the monitoring process, frequency method was used in the measurement of cable force, and then the internal forces and alignment of the bridge was adjusted by controlling cable force.
在监测过程中，利用频率法测定索力，通过索力控制来调整桥梁的内力状态及线形。
During the monitoring process, frequency method was used in the measurement of cable force, and then the internal forces and alignment of the bridge was adjusted by controlling cable force.
在监测过程中，利用频率法测定索力，通过索力控制来调整桥梁的内力状态及线形。
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