如果不计测量误差和接长杆内心杆之间没有在最高点接触等原因的影响 ,从理论上计算内径千分尺组合后的尺寸应等于各单杆尺寸之和 ,即实际测量尺寸与上述这一“理论值”之差值应在测量误差这一数量级内。但有些内径千分尺组合后的尺寸比“理论值”大很多 (示值误差为负值 ) ,远 If you do not count the measurement error and then the rod is not the highest point of contact between the outermost point of contact and other reasons, theoretically calculated diameter micrometer combination size should be equal to the sum of the size of the single rod, the actual measurement size and the above “ Theoretical value ”should be within the order of magnitude of the measurement error. However, some internal micrometer size after the combination of “theoretical” much larger (indication error is negative), far