本文讨论了在预复合反应的“一、二、无穷大”模型中有限核大小效应的影响。
The influence of limited nuclear size effect to "One, two, infinity" model for precompound reactions is discussed.
目的：介绍一种由螺旋型根管钻、自行设计的根管口台阶状车针、预成桩核组成的预成桩核系统。
Objective:To introduce a new prefabricated post-and -core system, a helical drilling bit and a prefabricated post-and -core consisting of a root canal orifice bur which was designed by the author.
用离子霉素或乙醇预激活去核卵母细胞，对重组胚的卵裂和发育无明显影响。
Preactivating donor cells and enucleated oocytes with ionomycin has no significant enhancive effect on the cleavage of constructed embryos, but it arrests the blastocyst development.
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