What is common to these specific threats is their unconventionality. 这些具体威胁的共同特点是他们的非常规性。
Unconventionality points which are not fit for the rule manifested by most points are appeared frequently in testing data. 摘要在原始实测资料中经常出现与绝大部分点据体现出来的规律不相符合的离散异常点，需要特别标出。
