Today's decline in stock price canceled out yesterdays gain.今天股票价格下跌,抵消了上一日的收益.Memories, important yesterdays, were once todays. Treasure and notice today.记忆和重要的昨日也曾今是今天. 珍惜和关注今天吧.A man he seems of cheerful yesterda...
镁和 芸 苔素内 酯 是植物生长发育的重要营养与调节物质.Magnesium and brassinolide ( BRs ) are important nutrition and regulator in plant growth and development.采用高效液相色谱(HPLC)法测定槟榔花粉中芸苔素内酯的含量.HPLC was used to determine the content of brassinolide ...