A method of synthesis of butyl isobutyrate catalyzed by amidosulphonic acid has been studied.以氨磺酸为催化剂催化合成了异丁酸丁酯,确定了酯化优化条件.The method about synthesis of approximate straight line motion mechanism based on moving centrode ...
His signature was an incomprehensible scrawl.他的签字是令人看不懂的涂鸦.Don’t scrawl on the wall.不要在墙上乱涂。This letter must be from Frank;I recognized his scrawl.这封信一定是弗兰克写来的, 我认得他那潦草的笔迹。This letter must be from Frank; I recognized his...
超过10万人可能会在饮用受到污染的水后患病。More than 100,000 people could fall ill after drinking contaminated water.在黄石公园里使用雪车这一想法，为人们提供了一种对环境低影响、低污染的游览方式。The snowcoach concept in Yellowstone provides low-impact, low-pollution access.从汉福德受污...
戴利主教说他听到红衣主教去世的消息后感到极为震惊和难过。Bishop Daly said he was devastated by news of the Cardinal's death.她能听到他不均匀的呼吸声，似乎他是跑着过来的。She could hear his ragged breathing, as if he had been running.他从广播里听到的都是千篇一律的流行歌曲。The radio had ...