In this fashion the four entering carbons of two acetyl-coa molecules are conserved to form one 4-carbon dicarboxylic acid . 用这种方式，由两个乙酰辅酶A引进的四个碳，转变成一个四碳二羧酸。
When an inhomogeneous plane wave is introduced into a dense dielectric layer, it can bounce between the two boundaries . 把一非均匀平面波引进折射率较高的介质层时，它会在上下界面间来回地“弹”射。
Follower countries can just borrow the latest technology cheaply without having to bear the costs of research, invention and development . 技术后进国可以低价引进最新技术，而无需负担研究、发明和发展的费用。
As noted by him, nectarines were less esteemed than the peach in china and may have been introduced from these western areas . 如他所记述，在中国，油桃不如桃那样受重视，也许正是因为它是从这些西部地区引进的。
He did not use negative numbers, which he regarded as contradictory, but introduced a complicated scheme called "correspondence of signs" . 他不使用他认为有矛盾的负数，却引进了一套复杂的图表，称为“正负号的对应”。
Such notable professionals as john rivers hybridized various tree fruits, and introduced superior clones from france and elsewhere . 著名的专业工作者如JohnRivers对各种果树进行了杂交，并从法国和其他地方引进优良的无性系。
The limitations of this scheme became quite apparent with the introduction of detectors such as the plumbicon, image orthicon and vidicon . 这个方法的局限性在引进诸如氧化铅光导管摄像管，超正析象和光导摄像管之类的探测器之后变得很明显。
It must be used with caution, however, since words which have died out in britain sometimes survive in the u.s.a. and are finally hailed in british english as neologisms . 但是，在使用时应多加小心，因为在英国不用的词有时在美国倒仍旧使用，而后来又被当成词引进英国语汇中来。
Introduction and management of new medicines in hospital 医院对新药的引进及管理
The development of china ' s west and talents introductin 西部大开发与人才的引进
