目的研究高碘对甲状腺激素以及甲减、高碘对脑发育临界期大鼠海马组织神经生长相关蛋白表达的影响。
ObjectiveTo study the expression of GAP-43 hippocampal formation during brain developmental critical period of both hypothyroid and excessive iodine rats.
但是美国智力与发育残疾协会并未引入这个临界值。
But the American Association of Intellectual and Developmental Disabilities does not cite such a numerical cutoff.
以临界土洞为界，岩溶塌陷的整个发育形成过程从时间和空间上划分为内部塌陷和地表塌陷两个密不可分的阶段。
In time and space, the whole process of karst collapse can be divided into two phases: inter collapse and surface collapse in term of the formation of the critical soil hole.
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