对甘油催化氢解制取1, 2- 丙二醇效果最好的是含铜的催化剂.Copper - containing catalysts are the most suitable catalysts for producing 1, 2 - propanediol through catalytic hydrogenolysis of glycerol....
深呼吸，吐气。Take a deep breath and blow.他边深呼吸边扩胸.He breathed deeply and expanded his chest.缓缓地深呼吸，并轻轻晃动身体。Take some slow, deep breaths and give your body a bit of a shake....
The standard of living today is on the edge of subsistence.现在的生活水平几乎快要无法维持生计。A spell of poor health took the edge off her performance.一度身体欠佳令她表现有失水准。They all walked barefoot across the damp sand to the water's edge....
So tell me what this molecule does that makes it special...那么告诉我这个分子有何作用而使其与众不同。Does that mean the whole house is subsiding?那意味着整个房子正在下陷吗？It sounds like a wonderful idea to me, does it really work?...听起来这个主意很不错，真的能行吗？Som...
Results Strain rate was significantly correlated with Ep, Es, stiffness and distensibility.结果SR与 Ep 、 Es 、 僵硬度、膨胀性均有明显的相关性.The mechanism, development, testing and field test of EP DRA are introduced.介绍了EP系列减阻剂的作用机理 、 研制方...
她用镐和平锹挖地基。She dug the foundation with a pick and shovel.碎砖石可以用来铺路基和庭院地基。Brick rubble is useful as the base for paths and patios.如果地基不牢，房子将会倒塌。If the foundations are flawed the house will come tumbling down....
他是公认的匈牙利最有手腕的政治家。He is widely regarded as Hungary's most skilful politician.那些熟悉桑德斯的人都称他为手段高明的政治家。Those familiar with Sanders call him a consummate politician.采访政治家可能并不是什么高难度的事，但的确很重要。Interviewing politicians may no...
He gave me an approving nod.他向我点头表示同意。Expertise in making checking approving piping drawings like isometrics layouts support drawings etc.具有制作审查和批准管道制图的专业知识如等距图规划图和附图等.Procedures for approving and issuing work authorizat...