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支流物种丰度和密度均很低甚至为零，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、语用零推等角度出发,分析和探讨了文突性以及这种突性文读出时生成和应。

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度为零顶点半完全有向图和满足若干条件下局部半完全有向图中王问题。

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”、“零”、“无”或“000…n”等来表示都是不妥当，会给环境管和数据使用带来不良影响，甚至会误导出错误结论。