一、前言在自然环境中,机件的测量精度是一种变量,此变量在不同的气候区域中有很大的差别。欧洲多数国家属于海洋性气候,例如英国的平均气温年变幅只有10℃左右,而大陆性气候的中国内陆地区平均气温的年变幅在40℃以上,日变幅也比较大。显然,大陆性气候区域对测量精度的影响是值得考虑的。 First, the preface In the natural environment, the measurement accuracy of mechanical parts is a variable, the variable in different climate areas are very different. Most European countries belong to the maritime climate. For example, the average annual temperature of the United Kingdom is only about 10 ℃, while that of continental China is greater than 40 ℃ and the daily average amplitude is relatively large. Obviously, the influence of the continental climate on the measurement accuracy is worth considering.