On the base of studying the characteristics of diseases and insect pests in Sichuan province, this paper makes a analysis on the cause of formation and probe into the controlling way?
笔者在研究四川省竹类病虫害发生及危害特点的基础上，对其成因进行了分析，探索了竹类病虫害的控制途径。
Then based on analysis the principle of human behavior and formation mechanism of human error, the cause and a quantitative model of human error were given.
然后通过对人的行为原理和人因差错的形成机理的分析，得出人因差错形成的原因并给出了人因差错的量化模型。
This paper makes an analysis on the weather condition and physical climate effects, which cause the formation of icing in Hunan mountainous forests.
本文对湖南山地森林积冰形成的天气条件和物理气象原因进行了分析。
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