The polynucleotide chain is helical.多核苷酸键是螺旋形的.In a globular protein, certain portions of the chain are coiled into helical segments.在球状蛋白中, 链的某些部分被盘成螺旋状.Two types of viral symmetry have been recognized, the cubical symm...
请于今日将随函附上的捐款表格用所提供的邮资预付的信封寄回。Return the enclosed Donation Form today in the prepaid envelope provided.美元汇率今日收盘时有所上涨。The American dollar finished the day up against foreign currencies.今日在蒙特利尔的街头巷尾,人们的意见仍摇摆不定。Today on the ...
他们给他看了那个书套的一幅拼贴画.They showed him a paste - up of the book jacket.精细清洁复制罚款书套.Fine clean copy in a fine slipcase.书套是赠送的.Book jackets are free of charge....
The heaviest snowfalls today are expected in the south east.今天最大的降雪预计将出现在东南部地区。This bridge can bear the weight of the heaviest lorry.再重的卡车,这座桥也能吃得住.This box is the heaviest of the three.这个箱子是三个箱子中最重的....
远视者的苦恼则起因于正好相反的问题.People who are farsighted suffer from just the opposite problem.散光可发生在除近视和远视.Astigmatism can occur in addition to nearsightedness and farsightedness.目的应用角膜地形图仪研究远视性屈光不正儿童的角膜前表面光学特征.ObjectiveTo investiga...