Celestite is usually diagenetic but commonly forms very early in the history of the sediment.天青石一般是成岩期的,但通常是在沉积史的极早期形成的.Reduction - metathesis method for preparation of strontium carbonate from celestite is developed.提出还...
Success is not final, failure is not fatal: it is the courage to continue that counts.--Winston Churchill成功不是终点，失败也并非末日，最重要的是继续前进的勇气。No one agrees on what counts as a desert.关于沙漠的界定，众说纷纭。Experience counts for a lot in po...
很多难民村落都在偏远地区。Many of the refugee villages are in isolated areas.今天狩猎采集的生活方式在偏远地区侥幸留存了下来。The hunter-gatherer lifestyle today survives precariously in remote regions.他住在某个偏远的乡村。He lived out in the sticks somewhere....
Fill the cooling system with antifreeze as a protection against frost.在冷却系统里加防冻剂以防止霜冻.DEG is used in antifreeze and as a solvent.DEG是 一种溶剂,一般用作生产防冻剂.Choosing ethylene alcohol as antifreeze can meet requests of drilling w...