题目：
什么是测量误差？
答案：
参考答案：当进行任何一种测量时，由于测量设备，测量环境、测量技能等因素的影响都不可避免地会出现一定的误差，使测量结果与被测量真值之间存在一定的差值，这个差值就是测量误差。
什么是测量误差？
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