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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。

Aenigmatite , like sodium amphiboles and sodium pyroxenes, is also a kind of alk.

钠铁非石是一种三斜晶系的富钛、铁、铀的单链非辉石类硅酸盐矿物,通常和钠质辉石共生。

Using an in vitro assay, we show that matrix proteins induced formation of amorphous CaCO3 precipitates prior to their transformation into the calcitic crystalline form.

利用体外分析法发现,基质蛋白诱导碳酸钙形成非晶态析出相先于其形成钙质的结晶态。

It has nonreciprocity similar to that of ferromagnet on condition that the external magnetic field is parallel to magnetic lattices, and the dispersion relation of the antiferromagnet has nonreciprocity , too.

通过计算和讨论得到了当外磁场沿x轴方向,原磁晶磁矩沿z轴方向,波矢沿±y轴方向时,反铁磁质表面磁极化激元的极化与铁磁质在平行于磁晶磁矩的外磁场下的极化相类似,具有非对易性,且其色散关系也具有非对易性。

Its form and intensity in different areas of the buried hills and different evolution stage are very different and has caused the change of reservoir properties, namely increasing heterogeneity: intensive and selective corrosion has caused obvoius enlargment of the pre—existing pores and increase of permeability of algal sparry dolomite located in main permeable course and dilution zone of water injection, precipitation of secondary minerals has caused the reduction of porosity and decrease of permeability in the upper part of oil pool and oil—water contact.

古潜山不同区段在油藏保存和开发期,其水—岩作用方式与强度具有明显的差异性,导致储渗性能的非均质性增强:在主渗流带中的亮晶藻屑白云岩由于受到多期强烈的选择性溶蚀作用,孔洞发育,渗透性增强;而在油藏顶部和底部油水混合带中,水—岩作用以次生矿物沉淀为主,孔隙被充填,渗透性降低。

In this paper, the new IGF refined hot-forged and non-hardened-tempered steel with high strength and toughness was designed and its capability was studied.

研制了新型晶内析出铁素体细化微合金高强韧性非调质钢,并对其组织性能进行了系统的研究。

The effect of addition rare-earth metal,Ca and Mg elements on the microstructure,toughness of and the formation of intragranular acicular ferrite in hot affect zone of large heat-input welded low alloy non quenched-tempered steel plate was investigated.

研究了低合金高强度非调质中厚板钢中添加稀土和Ca、Mg微量元素对大线高能焊接热影响区显微组织微细化和晶内针状铁素体形成的影响。

The use of filter vacuum arc cathode plating nano-technology production of amorphous diamond films can achieve the thinnest 2 nanotechnology, diamond structure SP3 in more than 80 percent.

利用滤质阴极真空电弧镀技术生产的纳米级非晶金刚石薄膜最薄可以达到2纳米,金刚石结构SP3的含量超过80%。

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I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。