通过相对误差分析，证明了这种方法在实际应用中的可行性。
Deviation analysis proves the feasibility of this method in practical application.
文章提出弓形面积和弧长计量的实用公式，并分析了该公式的相对误差。
This paper puts forward some practical formulae of measuring the area and arc length of arch form, and analyses the relative error of these formulae.
结果表明，余弦形变幅杆共振频率的模态分析值与理论值比较吻合，平均相对误差为1.86%。
It is shown that the simulation result is consistent with that of the theory and the average relative error is 1.86%.
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