There are several things to notice above: first, there is no space on either side of the "=" sign; any space will result in an error (try it and see).
以上有几点注意事项：第一，在等号 "=" 的两边没有空格，任何空格将导致错误（试一下看看）。
The methods of sign test and runs number test of negligence error and adjustment of experimental covariance matrix are given in the work.
给出了检验疏失误差是否存在的符号检验法和游程数检验法。并给出了存在疏失误差时如何调整实验数据协方差矩阵的方法。
Sign In Error: The Security Server is down or cannot be reached.
登录错误：安全服务器关闭或无法达成。
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