规模经济半径不确定。
实践证明，使用这两种量具可直接测量非完整圆弧半径，量具操作简单经济实用。
The practice proves that by using the two measuring tools could directly measure the non-entire circle-arc radius, and the measuring tools are simply operated and economically used.
提出了一种基于统计数据求解经济供电半径和经济功率因数的新方法。
One novel method for working out the economic power supply radius and power factor is proposed based on statistic datum in the paper.
仿真结果表明：适当选取下平台铰点支座分度圆半径能更充分地利用系统的动力源，提高工程的经济性。
The result of simulation indicates that, by determining pitch radius appropriately, the system driver can be used more effectively and the cost of project can be saved.
仿真结果表明：适当选取下平台铰点支座分度圆半径能更充分地利用系统的动力源，提高工程的经济性。
The result of simulation indicates that, by determining pitch radius appropriately, the system driver can be used more effectively and the cost of project can be saved.
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