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...
...Isaac Newton's epiphany about gravity and a falling apple.艾萨克·牛顿关于地心引力和苹果落地的顿悟The commission, fronted by Sir Isaac Hayatali, was set up in June 1992.由艾萨克·哈亚塔利爵士领导的这个委员会建立于 1992 年 6月。Peter , Moses on Isaac, AEschy...
Far away through the plantation Vega sparkled like a lamp suspended amid the leafless trees.透过远处的树林,织女星象一盏灯似地挂在木叶尽脱的树枝间.Dr Amid was assisted by a young Asian nurse.阿米德医生的助手是一位年轻的亚裔护士。He was celebrated amid his contempora...
The popular papers all have photo features on their inside pages.通俗报纸的内页都有照片专栏.He smiled back, which for an instant transfigured his unrevealing features.他回笑了一下，有那么一瞬间不动声色的脸上焕发出容光。Your camcorder should have these basic f...
推销员击鼓以吸引人群.The salesman banged a drum to attract a crowd.我们在几里远的地方就可以听到击鼓的声音.We could hear the beat of the drum several miles away.他用手指在书桌上象击鼓似地敲.He drummed on the desk with his fingers....