1) Pre-classification method
预分级法
2) stepped pre-discharge
分级预泄法
3) forecast of divisiory instar and grade
分龄分级预测法
4) prediction method of predicting the products of different sizes
分粒级产品预测法
5) classification forecasting
分级预测
1.
The monitoring principle and rule of classification forecasting rock burst have been studied aiming at the rock burst in coal mining.
针对煤矿冲击矿压灾害,研究了冲击危险性的监测原理和冲击矿压危险的分级预测准则。
6) pre-classification
预先分级
1.
The original mineral of Dading Iron Mine was processed by the technique which in- cluded pre-classification, dry magnetic separation to discard dirt, magnetic separation of the coarsely ground ore, scondary grinding and secondary magntic separation of the rougher con- centrate, thus raising the processing quantity of the crude ore, reducing the grinding cost, with the grade of iron concentrate 65.
采用预先分级、干式磁选抛废、粗磨磁选、粗精矿再磨再磁选的工艺流程处理大顶铁矿原生矿，提高了原矿处理量，降低了磨矿成本，获得铁精矿品位６５。
补充资料：预分
1.正式分配前先分配一部分。 2.正式分配前，为了征求意见而进行的初步分配。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条