A two-stage combination system with CAF cavitation floatation and runningsand filtration was used for treating cutting liquid wastewater;
采用CAF涡凹气浮和流砂过滤二级组合系统，对玉柴机器柴油废水进行了处理回用的应用研究。
2
In this paper some measures for controlling runningsand during artificial digging hole pile construction was introduced, they can be used as reference to engineering construction.
本文介绍了人工挖孔桩中几种克服流砂现象的措施，可供工程施工中参考借鉴。
3
The old man was running with the children along the sand beach.