Antioxidant tertiary butyl hydroquinone was prepared by hydroquinone and tertiary butyl alcohol.由对苯二酚与叔丁醇反应制得抗氧化剂叔丁基对苯二酚.They were good catalyst for synthesis of n - butyl cinnamate.它们是催化合成肉桂酸正丁酯的良好催化剂.A method of synthe...
A great dog scorns the snarling of a little dog.一只大狗瞧不起一只小狗的咆哮.He scorns the 'pot-luck' approach.他对这种“碰运气”的方法不屑一顾。He scorns the "pot-luck" approach.他对这种“碰运气”的方法不屑一顾。She scorns the visible trappings of success, ...
There're mosquito repellents available in the shops.在商店可以买到驱蚊剂.Repellents are of no great value.驱避剂无甚价值.Whereas attractants, repellents, and many incitants are olfactory substances , stimulants, and deterrents are u...
他有急事求见经理.He asked to see the manager for something urgent.因有急事我不能去参加会议.Urgent business kept me from attending the meeting.遇上急事,谁也保不住迷头.No one can guarantee to keep his head in a tight spot....