查询词典 n

A novel composite-channel Al x Ga1- x N/Al y Ga1- y N/GaN high electron mobility transistor has designed and optimized.

对新型复合沟道Al x Ga1- x N/Al y Ga1- y N/GaN高电子迁移率晶体管进行了优化设计。

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。

The results indicate that the electron loss timescales due to artificial injection of ELF/VLF waves in the inner and the outer radiation belts depend largely on the value of the cold-plasma parameter α*(∝ B 2/ N 0, where B is the ambient magnetic field and N 0 the electron number density), the properties of wave frequency spectrum, the wave power and the electron energy in resonance with the waves.

数值计算结果表明，在内、外辐射带由于ELF/VLF波的人工注入而造成的高能电子损失时间尺度很大程度上取决于冷等离子体参量α*(∝ B 2/ N 0，这里 B 是背景磁场， N 0是电子数密度)、电波频谱特性和功率，以及与波发生回旋共振的电子能量。

The electron location function shows the electronic density changes at both the atomic vacancies and antisites. There is an obvious absence of electronic areas where the vacancy of Ga has the dangling bonds of N, which are favourable for the sdsorption of metal atoms. In contrast, at the vacancy of N, there is more electron distribution(ELF:0.16-0.45), forming lone electron pairs which are profitably available to combine electronegative atoms.

电子局域函数显示了表面空位和替位处的电子密度变化，表面Ga原子空缺处有非常明显的缺电子区域，悬挂键临近N的电子密度增大，有利于对金属原子的吸附；N原子空位处的ELF值为0.16-0.45，有利于同电负性较大的原子结合。

The FTIR spectrum of DTC-TETA showed strong absorption peaks at 1 461-1 388 cm-1 and 1 174-996 cm-1 which were attributed to partly double bonds of C and C,respectively.The UV spectrum of DTC-TETA had two absorption peaks at 265 and 290 nm,assigned to π—π* transition of N…C…S radical and nonbonding electron n—π* transition of S…C…S radical to conjugated system,respectively.

在DTC-TETA的红外光谱图中，在1461-1388cm-1处和1174-996cm-1处分别出现含有部分双键性质的〖JGC〖ZJXS，YN键和键的特征吸收峰；在紫外光谱图中，分别在265和290 nm处出现两个最大吸收峰，分别对应于N…C…S基团的π—π*跃迁和S…C…S基团中硫原子上非键电子向共轭体系的n—π*跃迁；元素分析结果表明该化合物中碳、氢、氮、硫的摩尔比近似为

Acting as an antenna molecule in the supramolecular system, Mg(superscript 2+)-HA remarkably enhances the photoinduced electron transfer efficiency between C60 and an electron donor, N, N-dimethylaniline.

作为超分子体系中的光捕获分子，Mg(上标 2+)-HA能显著地提高C60与N，N-二甲基苯胺的光诱导电子转移反应效率，生成的C60负离子自由基的电子自旋共振光谱信号强度比未加入Mg(上标 2+)-HA时增强了9倍左右。

Methods Solid-tumor-bearing mice were produced with Lewis lung cell and randomly divided into radiation group (n=18) and control group (n=17).The mice in the radiation group were irradiated by 30 Gy X-ray. The expressions of E-cadherin and MMP-9 were detected by immunohistochemical. Results After two weeks of therapy.

建立Lewis肺癌模型，将荷Lewis肺癌的C57BL/6雄性小鼠35只随机分为照射组(n=18)和对照组(n=17)，照射组接受30 Gy的X线肿瘤局部照射，对照组不接受照射，2周后采用免疫组化法检测瘤组织中E-钙黏素蛋白和基质金属蛋白酶－9(MMP-9)蛋白的表达。

MethodsSolidtumorbearing mice were produced with Lewis lung cell and randomly divided into radiation group (n=18) and control group (n=17). The mice in the radiation group were irradiated by 30 Gy Xray. The expressions of Ecadherin and MMP9 were detected by immunohistochemical.ResultsAfter two weeks of therapy.

建立Lewis肺癌模型，将荷Lewis肺癌的C57BL/6 雄性小鼠35只随机分为照射组（n=18）和对照组（n=17），照射组接受30 Gy的X线肿瘤局部照射，对照组不接受照射，2周后采用免疫组化法检测瘤组织中E钙黏素蛋白和基质金属蛋白酶9(MMP9)蛋白的表达。

Improving C∶N and Lignin∶N ratio and biotic environment such as microbe quantity and activity. Increased UV-B radiation and N deposition also affected decomposition, but the results were uncertainty as the absent of data.

UV-B辐射和大气N沉降的增加亦对凋落物分解产生直接和间接的影响，但影响效果尚不很清楚，有待进一步的研究。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。