The yields of other cyclic acetals were between 62.并在此条件下合成了多种环缩醛,收率62.Eight acetals ( Ketals ) were synthesized under the optimal conditions.在最佳条件下,合成了八个缩醛 ( 酮 ) 化合物.The hydroxyl groups can be changed into esters , ethe...
Karst cave if found any is filled up or contained with water.在业已发现的卡斯特溶洞中均充满或含有水.The later period of karst corrosion deposit experienced lateritization, had accomplished the red clay basic characteristic.岩溶残余堆积物后期又经历红土化作...
我可以用测量法求得某物的体积.I can find the size of something by means of measurement.根据协议，致癌化学物的排放量将减少约80％。Under the agreement, releases of cancer-causing chemicals will be cut by about 80 per cent.知道了某物的距离才能判断其高度。You can only judge ...