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.
灯塔的光束在渐浓的暮色中清晰可见。The lighthouse beam was quite distinct in the gathering dusk.整个地区点起了一系列灯塔.A chain of beacons was lit across the region.灯塔的光亮在数英里之外都能看见.The blink of beacon could be seen for miles....
块菌蕈类在西南部的阿尔及利亚沙漠是丰富的.Truffle mushrooms are plentiful in the southwest Algeria desert.对人类有利的子囊菌包括块菌, 酵母和产青霉素菌.Ascomycetes of interest to humans include truffles, yeasts, and Penicillium species.这头猪不停地拱土寻找块菌.The pig was ro...