The results show that the main factor is the heat transferring to the material, the conglomeration and growing of the cobalt powder on different material bed is effected by the temperature gradient.
认为对物料的传热是生产过程中的主要控制因素，由于料层中温度梯度的存在，影响到物料床中不同层次分解的钴粉聚集长大过程。
But the theory about the flow regime of the wave boundary layer, the wave friction factor, the bed shear stress and the initiation of sediment motion has not developed very well.
而且波浪是海岸地区一个非常重要的海洋水动力因素，波浪作用下底部边界层的流态、底摩阻系数、床面剪应力和泥沙起动的理论还不成熟。
Coal bed joints are a widespread structure in coal beds. They are important objective in study of shaft structure and also a very important engineering geological factor.
煤层节理在煤层中普遍发育，它不仅是矿井构造研究的重要内容，同时也是极其重要的工程地质因素。
应用推荐