硼在针铁矿、水锰矿上的吸附为放热过程,解吸为吸热过程.By contrast , the process for goethite and manganite were exothermic.观察了针铁矿及其前体对溶液中亚砷酸根离子的吸附过程和吸附性能.The absorption reactions of goethite and its precursors on arsenite were studied.研究发现初期风化样品的针...
这些铭文是新刻的，而且刻痕很深。The inscriptions are fresh and deep-grooved.铭文已磨损,无法辨认了.The inscription has worn away and can no longer be read.捐献者在它上面刻下了如下铭文.The donor engraved the following inscription upon it....
It's easy to fritter away a fortune if you're not careful.如果你不小心,要挥霍掉一大笔钱是很容易的.to fritter your money浪费金钱Don't fritter away your precious time.大好时光,不可等闲度过.I seem to fritter my time away at coffee mornings.我...