Studies on the distribution of microbe and their degradation of organic material in compost are presented, and the character of denaturing gradient gel electrophoresis (DGGE) method is also discussed.

对当前堆肥中微生物种群分布及其对有机物分解作用的研究进行分析，论述了分子生物技术中的变性梯度凝胶电泳（DGGE）的特点。

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According to the unique engineering foundation character of desert, the paper puts forward to solve the issue of great gradient variation through mesh screened baffle well.

根据沙漠地区的独特工程地基特性，提出利用筛网式消力井解决地形坡度变化大的问题。

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A fuzzy gradient feature extraction method based on gradient normalization applied in handwritten character recognition is proposed.

提出一种应用于手写字符识别的基于梯度归一化模糊梯度特征提取方法。

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