A new presulfidation process of hydrotreating catalyst in the hydrogenation is introduced.介绍了一种加氢催化剂器内预硫化新工艺.Determination method of Pd content in hydrotreating catalyst by ICP - AES was established.建立了采用电感耦合等离子体发射光谱(ICP...
就在那时，我恰好环顾了下四周。It was just then that I chanced to look round.所有颜色都会褪色——尤其是在阳光直射下。All colour fades— especially under the impact of direct sunlight.有些情况下有最低年龄限制。In some cases there is a mini-mum age limit....
他猜测说有些人也许能够察觉重大灾难。He conjectured that some individuals may be able to detect major calamities.心理测试能够使组织机构避免犯下损失惨重的大错。Psychometric tests can save organizations from grim and costly mistakes.他们已经拆除所有能够袭击欧洲的战术核导弹。They have ...
The electron clouds are clearly visible as blurs surrounding the invisible nuclei.电子云就象环绕着看不见的核的一片云雾.The letter had many blots and blurs.信上有许多墨水渍和污迹.This creates a spectrum of colours at the edges of objects which blurs ...
回顾了微尺度反应技术的发展及其在纳米材料制备中所展现的广阔前景.Microscale reaction technology was reviewed and its prospect in nanomaterials was discussed.概述了微尺度热传导理论的几种模型及其求解方法.Theoretical models of microscale heat transfer and solving approaches are...