Mining backfilling is restrained by relatively high filling cost.充填采矿由于充填成本较高而制约着其发展.High - water rapid - hardening backfilling with whole tailings is a new developed backfilling technology.全尾砂高水速凝充填技术是一项新近发展起来的充填技术.Its ...
一代又一代学生学会了机械地重复这些标准解释。Generations of students have learnt to parrot the standard explanations.许多文人只是机械地模仿一套听上去令人印象深刻的说法。Many literary academics simply parrot a set of impressive-sounding phrases.我好几个小时都在机械地往墙上打网球。I spent...