面基的

B3LYP/6-311++G** calculations were carried out to study the trimethylamine catalyzed Baylis-Hillman reaction between acraldehyde and formaldehyde.

采用密度泛函DFT-B3LYP方法在6-311++G**基组下计算研究了三甲胺催化的丙烯醛和甲醛的Baylis-Hillman反应的微观过程，获得了两种反应通道(分别对应于顺式-丙烯醛和反式-丙烯醛)的势能面。

In this species, the first division of zygote produces two equal hemispheric cells by the first partition wall at the right angles to the axis of the archegonium.

合子的第一次分裂面垂直于颈卵器的长轴，产生两个相等的子细胞，靠近颈卵器颈部的营养器官原始细胞和远离颈部的基足原始细胞。

Because of limitation of space dimension, the paper proffers a program-add reflector switch near the image plane to implement the switchover of the focal plane, in which position precision is paramount after switch.

基於空间尺寸的限制，提出了通过在像面附近增设反射镜切换方案实现焦面的转换，焦面的转换过程中最重要的是切换后的定位精度。

After heat treatment at 1100C in air, the elements of the substrate and the bond coat diffuse and the diffusion of Ni is an uphill diffusion. The layer of r " phase and the layer of A12O3 or NiAl2O4 were formed at the interface of the substrate and the bond coat and at the interface of the bond/top coat, respectively. The thickness of the r " phase and the oxide layer increases with the increase of the time of the heat treatment.

经1100℃热处理，基体和底层中元素发生了相互扩散，并在界面析出γ'相，γ'的存在使界面的结合为冶金结合；在底层／面层界面由于底层被氧化和Al与ZrO_2氧化还原反应形成Al_2O_3等氧化物，Y'和氧化物的厚度随热处理时间延长而增加。

This discourse describes the application of JC series middle voltage frequency converter which is made in China in coal pit belt conveyer machines; it describes details about the operational principle of coal belt conveyer machines and the method of frequency derived alteration.

本文叙述了国产基茨系列中压变频器在煤炭矿井采煤作业面输送皮带机变频改造中的应用；详细地叙述了输煤皮带机的工作原理和变频改造的方法。

The relationship between the microstructure and the electrochemical surface characteristics of the oxide anodes was explained.

了解成分和基体表面预处理对铱钽氧化物阳极形貌和精细结构的影响，揭示了铱钽氧化物阳极的微观结构和表面电化学特征之间的关系。

This paper uses the face-on radiography technology to investigate the Rayleigh-Taylor instability of sine modulated surface target at the Shengguang Ⅱ facility and gains vivid space and time resolution images.

在神光Ⅱ装置上，利用面向背光照相技术对正弦调制平面靶的瑞利-泰勒不稳定性增长进行了实验研究，得到了清晰的时空分辨图像；采用傅里叶变换取基模法和求波峰波谷差值法分析了实验结果；两种方法得到的靶扰动增长因子相同。

900M3 thick granite tile finish (yellow rust litchi-China origin) bush hammered finish c/w 20mm screeding with average 50mm thick cement and sand mortar base; butt and jointed with cement and sand (1:3) mortar pointed in matching colored cement grout and laid on screeded bed

900立方米厚的花岗岩砖饰面（荔枝铁锈黄，中国原产地）剁斧石面，使用20毫米沙浆，平均50毫米厚的水泥砂浆基地；用水泥和沙子（ 1：3 ）砂浆对接和连接，匹配彩色水泥灌浆并浇注在刮平的基床上。

By taking ortho-hexahedron as the basic form of abrasive grains that are distributed randomly on the grinding wheel base, the model of virtual grinding wheel is built. Mathematic model of interference between the abrasive grains and the workpiece is given.

以正六面体作为磨粒的基本形态，并将该磨粒随机分布在砂轮基体上，建立虚拟砂轮的仿真物理模型以及磨粒与工件接触的数学模型。

The potential energy contours describe the structure character of PdPb2 ground state molecule rightly. Furthermore, molecular static reaction pathway based on this potential energy function is investigated.

使用多体展式理论导出了势函数中的参数进而给出PdPb2分子基态势函数的解析表达式，其势能面准确地复现了PdPb2分子的两个稳定构型( C 2 V 和 C ∞ v )及其能量关系。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。