The last two bases of shape function space are general functions restrained by some conditions.
形函数空间的最后两个基函数采用一般函数加限制条件的形式。
METHODS: the bases for the establishment of extended medicine history, its concept, basic mode and contents, and the channel for it to exert its function and its effects etc were introduced.
方法：介绍拓展型药历的建立依据、概念、基本模式和内容，及其发挥作用的途径和效果等。
As the reverse transcriptase is lack of effective function of proofreading the bases, the HBV genome is easier to mutate than other DNA viruses.
HBV复制过程中要经过逆转录，由于逆转录酶缺乏有效的碱基校对功能，故hbv基因组比一般dna病毒易发生变异。
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