分子

The numerator in this fractional designation is known as the diametral pitch and controls the pitch diameter; the denominator, which is always double the numerator, is known as the stub pitch and controls the tooth depth.

在这一系列的分数中的分子是径节，径节的大小决定了节圆的直径；而分数中的分母通常是分子的两倍，分母是残余径节，它的作用是控制齿槽的深度。

For example, for diatomic molecule the two molecular orbitals are combined by two atomic orbitals.

以双原子分子为例，两个原子轨道可以组成两个分子轨道。

At the same time, it provides drawing procedure of VB so that it can draw pictures of the other wave function of the diatomic molecule and the picture of electronic cloud if do some changes to the procedure.

本文研究了绘制锂化氢分子波函数和电子云图形的方法，并给出了VB绘图程序，对程序略加求改，可以绘制其他双原子分子的波函数和电子云图形。

In the first four sections of this paper, these basic knowledge and calculational methods for the study of potential energy function are simply introduced. 9-parameter Murrell-Sorbie analytical potential energy function that can accurately describe especial potential energy function of diatomic molecule is obtained through calculations and analysis for the first time.

本文前面部分在简单介绍与分子势能函数研究相关基础理论知识和计算方法的基础上，通过计算、分析比较，首次得到了能够正确描述双原子分子特殊势能曲线的九参数Murrell-Sorbie解析势能函数。

The ground state of C2 molecule is studied using VB mehods. The potential energy curves of the C2 diatomic molecule were computed by using ab initio VB methods, VBSCF, BOVB, and VBCI. The computational results show that the VB-based PECs are parallel to that of Full CI calculation.

应用XMVB程序对C2分子的基态进行了理论研究，计算结果表明价键方法能够给出和FCI相平行的解离势能曲线；高级别的VB方法，VBCISD方法，能够得到和高等级分子轨道方法相符的解离能。

Itric oxide has abundant Rydberg and valence electronic states and is one of the most studied diatomic molecules.

O分子具有丰富的里德伯态和价态，它是人们研究最多的双原子分子之一。

By research of N2 in strong laser field, the characters of same nucleus diatomic molecular in extreme condition are found.

通过对强激光场作用下N2分子的研究，我们得到了在极端条件下同核双原子分子的动力学特点。

The recognition capability and adsorption rate of MIP can be significantly enhanced by selective modification.Separation factor could be increased from 1.60 to 3.06 after modification when naringenin was chosen as competitive molecules, and the time needed for adsorption equilibrium could be reduced from 100 min to 60 min.Within a certain range, increasing template molecule concentration or diazomethane dosage, or adopting solvent which had weaker hydrogen bond action with template molecules could all improve the modification effect.

结果表明，选择性修饰能明显提高MIP的识别能力与吸附速度，以柚皮素为竞争分子，分离因子可从修饰前的1.60提高到修饰后的3.06，吸附平衡时间从修饰前的100 min降低至修饰后的60 min；在一定范围内提高模板分子浓度，增大重氮甲烷用量，采用形成氢键能力较弱的溶剂，均能提高修饰效果。

The results show that there is excellent linear relationship between solute-related parameters and retention indexes for the saturated hydrocarbon, olefine and diene compounds on different polar chromatographic stationary phases.

结果表明：烷烃、烯烃、二烯烃类化合物在不同极性的色谱柱上的色谱保留与其分子结构描述参数之间具有较好的线性关系，烃类化合物在不同极性固定相上的保留主要与溶质分子的MR有关，即与溶质分子的色散力有关。

This review summarizes the research progress in biology, molecular biology, isolates and control of it, particularly on the research of the virus genome and the sequence difference among isolates by using molecular method.

概述了国内外关于柑橘碎叶病毒的生物学、分子生物学、病毒的株系和控制方面的研究进展，尤其是对近些年用分子生物学方法研究病毒的基因组和株系序列差异方面的情况作了详细的介绍。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。