hourly efficiency
常见例句
- Select drill bit according to the drillability of rock, and use them in turn in conformity to certain sequences, rationally control hourly efficiency and hoisting interval;
三是根据钻遇岩石的可钻性级别选择钻头，按照一定顺序依次使用，并合理控制时效及提钻间隔； 返回 hourly efficiency