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Homogeneous or heterogeneous base material is selected; an alternately superimposed barrier layer and an alternately superimposed recessed layer are grown and formed at the extension of the base material; donor impurity and acceptor impurity are doped in the interface between the barrier layer and the recessed layer and in the interface between the recessed layer and the barrier layer, and the p type group III nitride material doped at a position selecting superlattice is obtained.

选择同质或者异质的基质材料;在基质材料上外延生长形成变换叠加的垒层和阱层,在垒层与阱层的界面和阱层与垒层的界面掺入施主杂质和受主杂质,得选择超晶格位置掺杂的p型III族氮化物材料,其中,每个生长周期的步骤为:生长带隙较宽的垒层,同时掺入受主杂质;生长施主杂质或受主杂质δ掺杂层;生长非掺的带隙较窄的阱层;生长受主杂质或施主杂质δ掺杂层;在N 2 气氛下对所得的选择超晶格位置掺杂的p型III族氮化物材料退火,即得目标产物。

Ti-Si composite materials are mixed at atomic scale, and Ti-O-Si bond appears in all of the samples with different TiO2 content; the mixed oxides are mainly existed in the form of amorphous pattern, anatase appears when the TiO2 content is more than 80%, but compared with the intension of pure TiO2, it has not integrate structure. The acetic content has great influence in the specific area and crystal structure of the mixed oxides. 20TiSi has good heat stability, still possesses 11m2/g after calcined at 1100℃; calcinations on the large scale of temperature does not cause the break of Ti-O-Si bond, TiO2 is well dispersed in 20TiSi calcined at 1100℃, and it still existed in the form of amorphous.

结果表明:制得的Ti-Si复合氧化物具有很高的比表面积,在TiO_2含量为10%时达到681.5m~2/g,Ti原子进入Si-O四面体结构中,形成Si-O-Ti键,复合氧化物的稳定性好,当TiO_2含量低于60 wt%时,以无定型形式存在;当含量为80%时,出现锐钛矿型TiO_2,但与纯TiO_2相比晶型不完整:醋酸对Ti-Si复合氧化物的比表面积、晶型都有很大的影响;TiO_2含量为20%的20TiSi经1100℃高温焙烧后,仍有较高的比表面积(11m~2/g),稳定性好,在较宽的温度范围内焙烧,没有引起Ti-O-Si键的断裂,分散度高,没有出现晶型TiO_2。

Quantum dots are a kind of semiconductor nanopaticles with the radius equal to or less than the exciton Bohr radius. They have tremendous potential in the field of biology and medicine because of their unique and tunable optical properties (broad excitation spectrum, narrow emission spectrum, precise tunability of their emission peak and negligible bleaching, etc) as new fluoresent probes.

量子点是半径小于或接近于激子玻尔半径的一类半导体纳米晶,作为一种新型的荧光标记物,其独特和可调谐的光学特性(宽的激发光谱、窄的发射光谱、可精确调谐的发射波长以及可忽略的光漂白等)使其在生物和医学方面显示出巨大的应用潜力。

They used limestone of different quality and large-fluctuant-range waste stone in proportion and substituted a part of clay with clay stone to produce cement. And the physical performance of the produced Portland cement was improved greatly-28 d strength increased from 50.4MPa to 54.5MPa, and output of the rotary kiln increased. Moreover, the company also tried to use green shale as admixture to produce compound cement and successfully produced compound Portland cement with a little low early strength and a little higher 28d strength than slag Portland cement. And the cement cost decreased 19.59 yuan per ton.

将CaO含量波动范围较宽的废石与不同品位石灰石按比例搭配使用,将其粘土质特性的废石替代部分粘土生产;而且生产的硅酸盐水泥熟料物理性能有较大提高,28d强度由原来的50.4 MPa提高到54.5 MPa,窑产量也有一定的提高;此外,该公司还进行了将绿色页岩作混合材生产复合水泥的生产探索,成功生产出了早期强度略低,但28d强度略高于矿渣硅酸盐水泥的复合硅酸盐水泥,且使水泥生产成本降低19.59元/t。

County compound at the center of the old town, not in a wide street edge, a hundred meters of dilapidated cement, the end of the road there is a compound here is the Lushi County compound.

县委大院位于老城区的中心,在一条不宽的街道边,有一条100米左右的破旧的水泥路,路的尽头有座大院,这里就是卢氏的县委大院。

This series continually publishes important reviews of the broadest interest to geneticists and their colleagues in affiliated disciplines.

这系列连续用使出版给遗传学家和他们的同事的最宽的兴趣的重要的回顾附属于的训练。

How many a poor immortal soul have I met well nigh crushed and smothered under its load, creeping down the road of life, pushing before it a barn seventy-five feet by forty, its Augean stables never cleansed,and one hundred acres of land, tillage, mowing, pasture, and wood-lot!

我曾遇见过多少个可怜的、永生的灵魂啊,几乎被压死在生命的负担下面,他们无法呼吸,他们在生命道上爬动,推动他们前面的一个七十五英尺长,四十英尺宽的大谷仓,一个从未打扫过的奥吉亚斯的牛圈,还要推动上百英亩土地,锄地、芟草,还要放牧和护林!

How many a poor immortal soul have I met well-nigh crushed and smothered under its load, creeping down the road of life, pushing before it a barn seventy-five feet by forty, its Augean stables never cleansed, and one hundred acres of land, tillage, mowing, pasture, and woodlot!

我曾遇到过多少个可怜的、不朽的灵魂啊,在生活的重负之下几乎被压死,他们无法呼吸,他们在生命道上爬行,推动他们前面的一个七十五英尺长,四十英尺宽的大谷仓,肮脏的住所从未打扫过,上百英亩土地要耕耘,除草,还要放牧和护林!

How many a poor immortal soul have I met well-nigh crushed and smothered under its load, creeping down the road of life, pushing before it a barn seventy- five feet by forty, its Augean stables never cleansed, and one hundred acres of land, tillage, mowing, pasture, and wood-lot!

我曾经见过多少可怜不朽的灵魂啊,他们几乎被这些重负压垮,窒息得就快要死了。他们在人生的道路上艰难地爬行,推着一个七十五英尺长、四十英尺宽的巨大谷仓,此外还有奥吉亚斯王的从来没有清洗过的牛棚,以及上百英亩的土地,耕地、草地、牧场和防护林。

Featuring wider angle views than predecessors, a new "super achromatic" objective lens,"Phase Corrected" Abbe-Koenig prisms, light transmission of at least 91%, and nitrogen filled composite housings reinforced with fiberglass to assure high endurance. In September 1994 Zeiss announced the first "Contax" 35mm rangefinder camera with interchangeable lenses made since 1959; the "G1" features include auto focus with any of four optional lenses, TTL metering, automatic film advance of up to 2 frames per second, and a luxurious titanium body.

这些新品体现了公司技术成就的最新进展,拥有较以前产品更宽的视角,新型&超消色差&物镜,&相位修正&阿贝-科宁棱镜,至少91%的透光率,充氮加固玻璃纤维复合镜室,以确保产品的耐用性。1994年9月,蔡司又推出了自1959年以来的首款镜头可互换型&康泰克斯&35mm连动测距对焦相机;此款&G1&型相机包括自动对焦功能和可任选的四个镜头,晶体管逻辑电路测距(TTL,晶体管逻辑电路),每秒高达两帧的自动卷片功能,和豪华钛机身外壳。

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推荐网络例句

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢?

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我,一个心中布满虚荣的女孩子真实的想法。

Oh, and I bought myself a new laptop," he said."

哦,我还给我自己买了一个新笔记本"他说。"