Analyzes the occurrence cause of debris flow in Fengcheng, discusses the classification and characteristics of debris flow, points out the damage of debris flow and material prevention methods.
对凤城地区泥石流的发生原因进行了分析，探讨了泥石流的分类和特征，指出泥石流的危害并提出具体的防治办法。
The chosen of material, property characteristics, structural form, property testing and its application used in vertical axial and mixed-flow pump are introduced.
文中介绍了立式混流、轴流泵用陶瓷轴承的材料选择、性能特点、设计结构形式、性能试验及其具体应用实践。
The propagation characteristics of vibrational energy flow in circular cylindrical shell with finite region of material discontinuity are investigated by wave motion approach.
运用结构振动的波动方法对有限长的材料不连续区域在圆柱壳中的能量流传播特性进行了研究。
The proper nanometer covering material is chosen base on the characteristics of fouling. And the characteristics of flow, heat transfer and fouling of sewage in nanometer coat pipes are study.
论文依据污水及管内污垢的特性选择适当的纳米涂料，并对纳米涂料管内的污水流动、换热、污垢增长特性等进行了实验研究。
Systematic material flow analysis was carried out according to the characteristics of chemical mines.
结合化工矿山特点，进行系统物流分析，为规划设计方案比较提供依据。
Systematic material flow analysis was carried out according to the characteristics of chemical mines. It can provide scientific basis for plan and design program comparison.
结合化工矿山特点，进行系统物流分析，为规划设计方案比较提供依据。
Systematic material flow analysis was carried out according to the characteristics of chemical mines. It can provide scientific basis for plan and design program comparison.
结合化工矿山特点，进行系统物流分析，为规划设计方案比较提供依据。
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