The hydrogenation can be controlled to produce any degree of hardness desired in the product.为了生产所需要的任何硬度的产品,可对氢作用加以控制.Its hydrogenation activity in aromatics saturation and ring opening activity were investigated.芳烃加氢饱和...
With a low-pitched rumbling noise, the propeller began to rotate.伴随着隆隆的低沉噪声，螺旋桨开始旋转起来。The engine turned a propeller.发动机使螺旋桨旋转起来。The freighter fouled its propeller in fishing nets.货船的螺旋桨被渔网缠住了。...
Everything he writes demonstrates the acuteness of his intelligence.从他的文笔可以看出他思维敏捷。Her uncle looked at her awhile with genial acuteness.姨父看了她一眼,目光显得和蔼而犀利.As soon as this was touched upon in any way she was capable of gre...