The sample, after being purged by reversed extraction and purified byPVP - kieselguhr column, was enriched through Amberlite XAD - 7 column. 样品经过乙酸乙酯反萃取及PVP - 硅藻土层析柱后, 再径XAD - 7柱浓缩.
They tried everyway to find the solution.他们想尽办法来解决问题.They tried everyway to find the information.他们用各种方法试图找到资料.Their competitors tried everyway to find the information.他们的竞争者想尽方法去获取该项情报....
警察局速记员逐字记下了那个人的供词.The police stenographer recorded the man's confession word by word.法庭速记员记录下了审判进程.The court stenographer registered the trial proceedings.速记员可能是旅馆的职工,也可能是某一受让人的雇员.The stenographer may be either a ho...