Lignin is a characteristic component of secondary walls.木质素是次生壁成份的特征.A new syntan product prepared with tar phenol and lignin sulfonic acid.以工业副产物木素磺酸和焦油酚为主要原料研制出一种新的合成鞣剂.Alkali lignin is an abundant, cheap and renewable...
a premise that allow of only one conclusion假设容许只有一个结论I disagree with the premise that economic development has priority over the environment.我不赞成经济发展应优先于环境保护这个前提。Electrification of the countryside is the premise of agric...
Some of the finest drinking glasses are made from lead crystal.一些最高档的酒杯是用铅晶质玻璃制成的。He is the finest stylist in the English language of today.他是当今英语世界中文采最好的。He really was one of the finest boxers in post-war Britain.他确实是战后...