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 ...
An example for water - formic acid - acetic acid separation is given work.文中给出了水─ — 甲酸─ — 乙酸系统分离的示例.One advisable way is to synthesize NFM acylating morpholine with formic acid as acylating agent.较可取的是以甲酸为酰化剂,吗啉酰化初期强放热反应...
大量芽状突出物形成,并被脱出以获得微细胞.A larger number of budlike protuberances form and are pinched off to give microcells.从这一观点来看,城市是个象山岳一样的自地面升起的突出物.From this standpoint the city is an elevation, rising from the ground like a mountain....
England intend fielding their strongest team in next month's World Youth Championship.英格兰意欲在下月的世界青年锦标赛中推出他们的最强阵容。It's only fair to let her know that you intend to apply.告诉她你打算申请，这才算公平嘛。They intend to claim for ...