查询词典 electron-volt

In high perveance klystrons, violent variation of electron beam radius and electron transverse velocity is met with, and the energy exchange between kinetic electrons and gap field is a nonlinear process.

在高导流系数的速调管中电子束径及横向速度都会发生显著变化，运动电子与间隙电场之间的能量交换是非线性的互作用过程。

L〓 can accept the electron from the active PS Ⅱ center completely, and that DCBQ can only accept a part of the electron from the inactive PS Ⅱ center (40%) even at the concentration 120μ mol.

但DCBQ的浓度在比Cao等几乎高出一个数量级（120μmol.L〓）的情况下，也只接受部分无活性PS Ⅱ中心的电子（40％）。

Their morphologies were characterized with scanning electron microscopy, transmission electron m...

通过扫描电子显微镜、透射电子显微镜的观察，以及对产物的拉曼光谱分析发现，用本方法制备得到的碳纳米管形态良好，石墨化程度高。

Field emission scanning electron microscopy shows the diameter of Bi2Sr2CaCu2Oy nanowires is nearly 20 nm and the length is up to 1 μm. High-resolution transmission electron microscopy also shows the configuration of the polycrystalline nanowires with average diameters of 20nm.

利用场发射扫描式电子显微镜及高解析度穿透式电子显微镜来观察奈米线的外观及结构，奈米线的粗细约为20奈米，长度约为1微米，为多晶结构。

Methods MSCs were cultured with inbred line small-ear cancellous bone of Ban Na pigs . A 1.5 centimeter segmental defect was created in the mid-upper part of the radial shaft of adult rabbit. The defects were implanted into composited xenogeneic bone in experimental group and xenogeneic bone alone in control group , the defects were not filled with anything in blank group . The repair capability of the defects was assessed by scan electron microscope before operation and physical , histology, X-ray , transmission electron microscope, SPECT and bone mineral density examinations 4 , 8 and 12 weeks after operation .

将MSCs与版纳近交系小耳猪松质骨在体外联合培养，兔桡骨中上段制成1.5cm的骨—骨膜缺损模型，实验组植入复合异种骨，对照组植入单纯异种骨，空白对照组不植入任何材料，分别于术前行标本的扫描电镜观察和术后4周，8周，12周各时间点行标本的大体观察，组织学观察，X线片观察，透射电镜观察，SPECT扫描及骨密度测试，比较其骨缺损区骨修复愈合情况。

In the case of N=6 although the electron migration resembled the case of N=4, the electron localization was diminished.

在N=4的图中，因外层电子向两边接枝处转移，造成氮化硼纳米管中央电子密度明显减少。

When N=6, the electron transfer was similar to the case of N = 4, but inner layer electronic local was weakened so that parts of electrons in S layer was excited into P electrons, increasing axial electron mobility, meanwhile more performances of sp2 hybrid orbital formation were completed.

在N=6的图中，电子转移情况类似N=4的情况，但内层电子局域性有所减弱，导致部分s电子被激发成p电子，增大轴向电子流动性，同时可表现更多的sp2杂化轨道的形成。

In the three SBR reactors,the phenomenons of denitrifying dephosphatation with NO3——N and NO2——N as electron acceptors and the traditional biological phosphorus accumulation with O2 as electron acceptor were investigated respectively.

在3个SBR反应器中，分别考察了以NO3--N和NO2--N为电子受体的反硝化除磷现象，以及传统以O2为电子受体的生物聚磷现象。

At ψ=30°. 2. To obtain 〓 from the background of a direct Auger spectrum N Because the total Auger electron yields are only about 10〓 of the backscattered electron yields in the N spectra, the backgrounds of the N spectra are mainly formed by the backscattered electrons.

由于N谱中俄歇电子的产额只占背散射电子产额的10〓左右，因此背景主要由来自样品的背散射电子构成，其中包含着与背散射电子能量分布有关的信息。

As shown in the experimental results: as the conductor of petroleum biological degradation, the quantity of microorganism is the important factor of petroleum degradation efficiency, the huge natural capacity of microorganism in soil is its foundation of bioremediation; petroleum density in certain scope do not affect for the degradation efficiency of petroleum, and in the density of 5%, its initial degradation efficiency is higher, however after training 40 days, this kind of advantage change weak gradually, the reason may be the petroleum of high density probably having certain poison role for microorganism; the best ecological condition of petroleum contaminated soil bioremediation is that nutrition material C: N = 60, electron receives body HiOi joining quantity amount to 12 mg/g, water content is 50%, surface activator is anion surface activator of 12 Wan base benzene sulphur sour sodium; the relation of primary and secondary of factor is water content, surface activator, nutrition material and electron receiver.

试验研究结果表明：作为石油生物降解的执行者，微生物的数量是影响石油降解效率的重要因素，土壤中微生物的巨大的自然容量是其生物修复的基础；石油浓度在一定范围内对石油的降解效率并没有影响，并且在5％浓度时，其起始降解效率较高，但是到了培养40天以后，这种优势渐渐变弱，可能还是高浓度的石油对微生物有一定的毒害作用；石油污染土壤生物修复的最佳生态条件为：营养物质C：N为60，电子受体H_2O_2的累计加入量为12mg/g，含水量为50％，表面活性剂为阴离子表面活性剂十二烷基苯磺酸钠；因素的主次关系为：含水量、表面活性剂、营养物质和电子受体。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。