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 ...
运动员可以使用上旋球 、 下旋球和侧旋球.A player may use top spin, back spin or side spin.基本打法包括:反手和正手削球,反手和正手抽球,削下旋球,推挡,吊球, 扣杀,斜线球和快拨.I was impressed with his skills in the backhand smash , the forehand smash, and shot....
Our son has just graduated from a tricycle to a proper bicycle.我们的儿子刚刚从骑三轮车过渡到骑普通自行车.When unemployed, I went to drive a tricycle.我失业的时候就去拉三轮车.A game that is very popular with these young swimmers is the underwater tricyc...
Many of Kuwait's spacious freeways were engineered by W S Atkins.科威特有很多宽阔的高速公路是阿特金斯集团设计建造的。He could stand no more and engineered an escape.他无法再忍受，便策划了出逃。They are finely engineered boats.这些船只设计制造精良。...
Conclusion: Laparoscopy surgery for treatment extrauterine pregnancy one ideal surgery way.结论: 腹腔镜手术为治疗异位妊娠的一种理想手术方式.Scientists believe the frozen eggs stand a good chance of a pregnancy after being artificially fertilis...
Alternatively sows can be injected with long - acting penicillin at point of farrowing.或者,可以在分娩时给母猪注射 长效 青霉素.Products: Farrowing Bed dringker Plastic Floor Exhaust Fan cooling Pad and so on.产品主要有: 产床、保育床、定位栏、地板、风机、水帘...