零和的

In the stream with strong bed load movement there is no benthic macroinvertebrate.

河势散乱且河床运动剧烈的支流物种丰和密均很低甚至，生态条件差。

This article analyzes stylistic salience and stylistic read-outness from the perspective of Gestalt psychology, pragmatic default inference, etc.

本文从格式塔心学、语用等角出发,分析和探讨了文体的显突性以及这种显突性文体读出时的生成和解效应。

The kings prblems in semicomplete digraphs without vertices whose in-degree are zero and locally semicomplete digraph under some conditions are discussed chiefly in the paper.

其中,主要讨论了不包含内的顶点的半完全有向图和满足若干条件下的局部半完全有向图中王的问题。

In the environmental monitoring,to notate the results smaller than the detection limit by Not Detected,Zero,None or 0.00…n etc.is inappropriate even leads to the misjudged conclusion.

环境监测中，上报结果小于检出限时，以“未检出”、“”、“无”或“000…n”等来表示都是不妥当的，会给环境管和数据使用带来不良影响，甚至会误导出错误的结论。