Effect of disperse of nanosized titanium oxide in water was improved by sandmilling, and measured by sedimentation experiments.
通过砂磨提高纳米二氧化钛在水中分散的效果，并用沉降实验测定了分散情况。
2
When fishing the string fish in sand producer, string milling length should be optimized and a downhole string dynamic analysis model is established to calculate the length.
出砂井落鱼管柱打捞需要对管柱的套铣长度进行选择，针对这一问题建立了井下管柱受力分析计算模型。
3
In order to improve working environment of hard alloy for mine, replacement of sand blasting by ball milling handling technology is put forward.