论文部分内容阅读
对实验测定和计算所得的各种数值常常要进行修约,不少人在修约时简单地采用纯数字的四舍五入方法,这是不正确的。应按照GB8170-87《数值修约规则》修约,其简明口诀为“4舍6入5看齐,5后有数进上去,尾数为零向左看,左数奇进偶舍弃”。例如:修约到1位小数,12.149修约为12.1;12.169修约为12.2;12.150修约为12.2;12.250修约为12.2。
It is often not correct to modify the various values measured and calculated experimentally. Many people simply adopt the rounding method of pure numbers when modifying a contract. Should be revised in accordance with GB8170-87 “value repair rules”, the concise formula for “4 homes 6 into 5 par, after 5 into the number, the mantissa is zero to the left to see the left odd odd into the even ”. For example: rounding off to a decimal, 12.149 revision is about 12.1; 12.169 revision is about 12.2; 12.150 revision is about 12.2; 12.250 revision is about 12.2.