friable soil

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

Improvement of Strip Loosening Device in Cylinder Conditioner;

滚筒式回潮机片烟松散装置的改造