The process comprises first oligomerizing isobutylene to diisobutylene using a sulfonic acid type ion exchange resin.所述的方法包括首先异丁烯用磺酸型离子交换树脂低聚生成二聚异丁烯....
Carton, still drinking the punch, rejoined,'Why should I not approve?'卡尔顿仍然喝着五味酒, 回答道, “ 我为什么要不赞成? ”His grandfather had made jugfuls of his special fruit punch.爷爷有许多特殊的水果配方.Hurricane Andrew may be slowly losing...
The chairman made a few introductory remarks.会议主席说了几句开场白。...an introductory course in religion and theology.宗教与神学入门课程The wedding celebrant gives a brief welcome and an introductory speech before announcing the bride'...
There are intermediate varieties known as cannel coal.有一些中间性的变种,叫做烛煤.He travelled from New York to California via the Panama Cannel.他经由巴拿马运河从纽约到加利福尼亚.Resinite is a rich n 1 aceral in Teriary humic coal, boghead - cannel ...
乔治讲了个笑话为晚会揭开序幕.George started the ball rolling at the party by telling a joke.她那咄咄逼人的尖锐语调拉开了导致她垮台的事件的序幕。Her sharp, aggressive tone set in motion the events that led to her downfall.上午10点，一位风笛独奏家揭开了阿伯丁高地运动会的序幕，下午1点主要比赛项目开...
Objects and people looked like counterfeits of themselves.各种人和事好象都给自己披上了伪装.The counterfeits sell for about $20 less than the real thing...赝品比真货便宜大约20美元。Levi Strauss says counterfeits of the company's jeans are flood...