This paper discusses the ultimate speed of debris in different sizes which sink in water, analyzing the characteristics of the sinkage and the factors having impact on their sinking speed as well as making comparison of the laws for debris and silty sand sinking in water.
研究了不同石碴颗粒在水中下沉的终极速度;分析了石碴的沉降特性和影响沉降速度的因素;对石碴和泥沙颗粒在水中的沉降规律进行了对比。
As the main material in constructing compacted rockfill dam, the engineering properties of rockfill have a vital effect on dam s security.
石碴料作为堆石坝的主要筑坝材料，其工程性质对堆石坝的安全性有至关重要的影响。
Water characters in different frontages of limestone soils;
在不同的土地利用方式下石碴地水分性质研究
The structure features of control cubicles of KZ_(70) ballast hopper cars are described,and they are compared with those of the old control cubicles of ballast hopper cars.
介绍了KZ70型石碴漏斗车操纵室的结构特点,并且与以往的石碴漏斗车操纵室进行了比较。