采用这项技术可以从矿石浸出液制备钇富集物.The mentioned technology can be used for producing yttrium concentrate from ore leaching liquor.针对地浸矿山潜水泵提升浸出液的特点,研制了车载式电动提放潜水泵装置.The design sand pump for mine is discussed , and the method of increa...
那时候，牙科学刚起步，拔牙都不打麻药。In those days, dentistry was basic. Extractions were carried out without anaesthetic.他用过麻药,现在仍眩晕无力.He's still groggy from the anaesthetic.局麻药溶液中加入肾上腺素,使血管收缩.The addition of epinephrine to local an...