The classical manual method cannot an accurate result efficiently.

传统的人工肉眼观察计数法费时费力,而且精度难以保障.

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Using traditional manual method, sag calculation is complex and prone to making mistake.

传统的手工计算弧垂的方法不仅计算量大,而且容易出错.

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Using traditional manual method, sag calculation is complex and liable to make mistakes.

传统的手工计算弧垂方法不仅计算量大,而且容易出错.

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