According to the investigation of source and eroded condition of loose man dumped sediment in the urban area of Yanan, it has been found that the man dumped sediment from different sites will be gradually deliveried into river by water during rainy season or by man dumping.
在对延安市宝塔区人为松散堆积物来源及侵蚀状况调查的基础上 ,探讨了城市化建设开发造成的松散堆积物侵蚀与输移过程 ,指出松散堆积物由点源扩散—→线状输移—→集中汇聚 ,是延安市人为松散堆积物输移的主要过程。
Fluid kinetics study on jig washer bed dilation and stratification;
跳汰机床层松散与分层的流体动力学研究
The features and proportions of slurry and effect of borehole wall protection in different loose strata were mainly introduced.
重点介绍了松散地层不同地层泥浆特性、配比及护壁效果、措施。
This paper introduces a new wall protection method for drilling loose strata casing pipe wall protection.
本文介绍一种新的钻探松散地层护壁方法——套管护壁“三板斧”。
Effect of loose additive on SSP production and product quality;
添加松散剂对过磷酸钙生产和产品质量的影响