The close correspondence between the observed properties of gallium and Mendeleyev's predictions for eka-aluminum lent strong support to the periodic law.
镓表现出的性质与门捷列夫对“铝下元素”的预测密切对应，为周期律提供了有力的支持。
A new method to present the periodic law, the visual graphic form of the periodic system of elements, is proposed in this paper.
提出了一种新的元素周期律的阵列式图示方法。
He was the earliest one to introduce to domestic readers the periodic law of chemical elements, as well as the first person to work out systematic terms for organic compounds.
他最早向国内读者介绍了化学元素周期律，也是制订有机物系统名称的第一个人。
Despite many periodic cries that the pace of progress predicted by Moore's Law simply could not be maintained, it has so far held true.
尽管有许多质疑摩尔定律的声音，但迄今为止它是正确的。
A periodic mixed adaptive law and an adaptive repetitive learning control one are constructed to ensure the asymptotic convergence of the tracking error in the sense of square error norm.
通过引入参数周期自适应律，设计出的自适应控制策略，使跟踪误差平方在一个周期上的积分范数渐近收敛于零。
A periodic mixed adaptive law and an adaptive repetitive learning control one are constructed to ensure the asymptotic convergence of the tracking error in the sense of square error norm.
通过引入参数周期自适应律，设计出的自适应控制策略，使跟踪误差平方在一个周期上的积分范数渐近收敛于零。
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