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Coefficient of the tape 胶系
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This problem could be well resolved by adopting improved steel tape precise test method and actual linear expansion coefficient, as well as self-made testing apparatus and tools.
采用钢尺精密检定的改进方法及钢尺实际线膨胀系数检测方法，加之自制的检定器具、设施，可较好地解决钢尺自身准确性问。
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