查询词典 impurity

Oxygen is the most important unintentional doped impurity in CZ silicon, thus its related oxygen precipitation and internal gettering technique have long been the subjects of research interests.

氧是直拉硅单晶中最重要的非故意掺入杂质，与氧相关的氧沉淀及内吸杂技术的研究一直是硅材料研究的重要课题。

Controlling the unidirectional solidification process and using passivation and impurity gettering treatments are the main approaches to improve the solar cell properties.

通过控制硅锭定向凝固过程获得取向一致、粗大均一的结晶组织和采用各种吸杂及钝化方法降低杂质及缺陷对电学性能的影响是目前提高多晶硅太阳能电池转换效率的重要途径。

Moreover, in order to solve this issue of NILC poly-Si film, we develop an effective gettering method to reduce the Ni-metal impurity contamination of the NILC poly-Si films.

此外，为了解决对於镍金属诱发复晶矽薄膜来说，非常重要的镍金属残留问题，因而发展出有效的吸气方法来降低镍金属诱发复晶矽薄膜中的镍金属残留。

Then, by the relationship between the heat conductivity and the impurity concentration, the concentration distribution can be ontained.

进而可以据热导率和掺杂浓度的关系，得到半导体中掺杂浓度的分布。

According to the aforementioned features and basing a new the oretical framework of measurement on ice-thickness and beneath-ice-surface water levels by distinguishing the physical characteristics of air, ice and water, the paper analyzes the laws of the resistance and capacitance of ice with conductive impurity, mixture of ice and water, water and air change as temperature changes, draws conclusions such as ice as a weak conductor, monotonic feature of ice and water, and introduces the design of the structure of a new-type of ice-thickness sensor, its measurement method, and its application in practice.

基于这一特点，笔者提出了利用空气、冰与水的物理特性差异实现对冰层厚度及冰下水位接触式检测的新思路，对含有导电杂质的冰、冰－水混合物、水、空气的电阻、电容特性随温度的变化规律进行了初步分析，并得到冰的弱导电性质和冰与水的电容区间单调特性，据此提出了冰层厚度传感器结构及其冰厚检测原理，介绍了新型冰层厚度传感器在实践中的应用。

The impurity potential and interchain coupling integral have been calculated.

计算了杂质势和链间耦合积分。

Sulfuric acid concentration and impurity iron ions, chloride content on copper coating quality solution will have significant impact, in particular, management should be.

硫酸浓度、杂质铁离子、氯离子的含量差铜层的质量感化较不小，溶液处置答予不入格的鄙薄。

Ivory or yellow flaky solid , no foreign impurity

象牙色或黄色片状固体，无外来杂质

Is 130-150 deg.c, the working pressure of filtering element is less than MPa, filtering accuracy is 10-40 micra, the impurity content of filtered liquid sulphur is 10-100 PPM.

过滤温度为130―150℃，滤芯工作压力〈0.5MPa，过滤精度为10―40μ。过滤后液硫中的杂质含量为10―100PPM。

In this work, nanostructure samples of La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）were prepared by hydrothermal-precipitation method . The structural characterization of the powder samples were done by X-ray diffraction. XRD patterns showed that all the samples ate single perovskite-type phase withoutother impurity or secondary phase. The shape and size of samples were performed on Scanning Electron Microscopy. SEM photographs investigated that temperature of hydrothermal effects the phase of samples and alkalinity of the reaction mixture by ΔTad-T curve measurement device at low magnetic fielded

本论文采用水热共沉淀退火法制备了La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）系纳米结构，用X射线衍射仪确定产物为单相钙钛矿结构，无任何杂峰及第二相；用扫描电子显微镜与透射电子显微镜分析了产物的大小和形貌，发现水热温度对产物的形成起决定作用，随着温度的升高，产物由薄膜状向丝状转变，而溶液的碱度可控制产物的形貌和大小，当碱度为6.35mol/L，水热温度为240 C时，La0.6Ca0.4MnO3的主要形貌为纳米丝并有少量纳米颗粒，纳米丝平均直径为40nm；最后测量了粉末样品在低磁场（1.4T）下的磁热效应，发现水热共沉淀退火法制备样品的最大绝热温度明显高于球磨法制备样品的最大绝热温变。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"