晶圆片搀杂剂可以在元素周期表的III和V族元素中发现。
Dopants for silicon wafers are found in Groups III and V of the Periodic Table of the Elements.
文中利用并元变换的不进位性质，给出了一种构造最佳周期互补二元序列偶族的新方法。
By taking advantage of the characters of dyadic theory, a new method for constructing families of perfect periodic complementary binary sequences pairs (PCSPF) is proposed.
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。
Bond-parametric function and size-factor are used to study the formation law of alloy quasicrystals based on the fourth long period transition metals.
目的：检测癌基因d52家族新基因PC - 1在细胞周期各时相的表达变化。
Objective: To investigate the expression of PC-1, the new gene of tumor protein D52 family, during cell cycle.
本文指出了一族单峰映射存在周期为奇数的周期点，并进一步研究了某些周期轨道的结构。
This paper shows the existence of odd periodic points for a class of unimodal maps of the interval and gives order constructure of some periodic orbits.
稀有气体(亦称惰性气体)：通常排列在周期律中最右边一族的六种化学元素：氦、氖、氩、氪、氙和氡。
Noble gas (or inert gas) : Any of the six chemical elements that make up the rightmost group of the periodic table as usually arranged: helium, neon, argon, krypton, xenon, and radon.
铈：化学元素，周期表iii b族过渡金属中丰度最大的稀土金属。化学符号Ce，原子序数58。
Cerium: chemical element, a rare earth metal of the lanthanide series (hence having many properties of the transition elements), chemical symbol ce, atomic number 58.
铬：周期表VIb族金属化学元素，是过渡元素元素之一，化学符号Cr，原子序数24。
Chromium: Metallic chemical element, one of the transition elements, chemical symbol Cr, atomic number 24.
铬：周期表VIb族金属化学元素，是过渡元素元素之一，化学符号Cr，原子序数24。
Chromium: Metallic chemical element, one of the transition elements, chemical symbol Cr, atomic number 24.
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