禁带

However its large band gap energy limits its practical application in the case of natural solar light.

而阻碍其应用的是它的大禁带宽度不能有效地利用太阳光，因此研究开发对可见光响应的二氧化钛就成为当前光催化别研究中的关键课题。

Investigation of the ballistic propagation of acoustic wave through two almost same sintered samples with face - centered cubic lattices indicates that there is a band gap range respectively in two order quasi - homogeneous media.

研究超声波经过两个烧结样品的行为。两个烧结样品为有序的面心立方结构，它们的结构几乎相同。研究表明：在两个有序的准均匀的介质中分别有一个禁带区域。

Silicon and germanium, for instance, have forbidden bands whose widths are 1.1 and 0.65eV, respectively.

例如，硅和锗的禁带宽度分别为1.1电子伏和0.65电子伏。

Meanwhile group velocity is negative in the presence of the band gap range.

同时在禁带出现的区域群速度为负值。

Our results suggest that the negative group velocity does exist different formation with band gap range.

我们的结果表明群速度的负值的确存在于有序介质中的禁带区域内。

Company and Beijing University Wide Bandgap Semiconductor Research Center, Sun Yat-sen University Semiconductor Research Center, set up lighting a long-term partnership to jointly develop semiconductor lighting system; the company's lead director is currently the country,"semiconductor lighting technical standards working group" members, Shenzhen Science and Technology Committee of Experts on senior evaluation experts, Shenzhen City, Illuminating Engineering Society of senior experts.

公司与北京大学宽禁带半导体研究中心，中山大学半导体照明研究中心建立了长期合作伙伴关系，共同研发半导体照明系统；公司的首席董事目前是国家"半导体照明技术标准工作组"成员、深圳市科技专家委员会的高级评审专家、深圳市照明学会的高级专家。

Finally, the future of noise active control is proposed, that is design theory and method of sound interdict strap, active sound absorption and research of new absorption material.

最后，提出噪声控制工程的未来发展方向，即：声学禁带设计理论与方法，主动吸声，新型吸声材料的研究。

In order to study the polarization property of 1-D photonic crystal,transfer matrix method was used for calculation.

为了研究两种偏振光通过1维光子晶体的偏振特性，采用传输矩阵法做了相关计算，得到介质折射率、折射率调制的变化，在光正入射和倾斜入射时对不同偏振光的禁带都有影响的结果。

The photocatalytic degradation property of ZnM2O4 (M=Cr, Mn, Fe) nanoparticles was investigated by using methyl orange, acid red B and reactive red K-2G as model pollutants under the irradiation of a mercury-vapor lamp (λ＞400 nm) or sunlight. The degradation rates of the above three dyes by ZnM2O4(M=Cr, Mn, Fe) are over 80％, 57％ and 39％, respectively within 2 h. It is found that ZnM2O4 (M=Cr, Mn, Fe)has a novel photocatalytic behavior for dyes under visible light irradiation.

在高压汞灯(λ＞400 nm)和太阳光照射下，纳米ZnM2O4粉体对甲基橙、酸性红B、活性艳红K-2G等有机模拟降解液的2h脱色降解率分别达到80﹪，57﹪和39﹪以上，表明锌尖晶石ZnM2O4光催化剂具有良好的可见光催化活性，并随禁带宽度Eg的减小，催化活性增加。

Zinc oxide is an interesting wide band gap (3.3 eV) semiconductor material with a binding energy of 60 meV.

氧化锌是一种重要的宽禁带隙（3.3 eV）半导体材料，它的激子束缚能高达60 meV。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。