Bond-parametric function and size-factor are used to study the formation law of alloy quasicrystals based on the fourth long period transition metals.

利用键参数函数和尺寸因数对第四长周期过渡族金属元素基准晶形成规律进行研究。

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In this article, the glass transition temperature of a single polyoxymethylene (POM) chain adopting the modified bond fluctuation model was studied.

本文利用聚甲醛链的键长涨落模型，研究了聚甲醛单链的玻璃化转变。

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According be the geometries of transition state and product, it can be concluded that NH_2 ~ - attacks ethylene oxide along the direction of the bent bond approximately.

由过渡态和产物的几何构型得出NH_2 ~ -基本上沿环氧乙烷的“弯键”方向进攻。

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