Both characteristic quantity of safety grade and its variable are the value obtained from the fuzzy sub-set of safety grade on domain, and are not a definite point.

安全等级特征量及安全等级变量，均为安全等级取值论域上的模糊子集，而并非是一个确定的点。

youdao

This paper discusses the problems of doing work by the forces pointing at the definite point or vertically at the definite line or plane. And a calculating formula is given.

本文讨论了指向定点及垂直指向定直线或定平面的力的作功问题，并给出了一个统一的计算公式。

youdao

That's...these are trends that are unfolding rather than definite...that can be analyzed with any certainty at this point.

这些都是表面看来的趋势,并不是绝对的,从现在来看也难以下定论。

普林斯顿公开课 - 国际座谈会课程节选

The price for the item is prepaid, and the item is delivered at a definite point in the future.

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