selective diffuser

The innovatory technology of selective diffusion for crystalline silicon solar cells was described.

该文主要介绍一种制造太阳电池的选择性扩散新工艺,采用印刷电极的方法在硅片上的电极位置印刷高 磷浆料,然后在整个硅片表面喷涂一层浓度较低的磷源,放入高温炉中扩散后形成电极下具有较高的表面掺杂浓 度(-1020／cm3),电极间具有相对较低的表面掺杂浓度(-1019／cm3)。

Glucocorticoid Amplifies IL-2-induced Expansion of CD4~+CD25~+FOXP3~+ Regulatory T Cells in Vivo Selectively and Suppress Graft Verses Host Disease after Allogeneic Lymphocyte Transplantation;

糖皮质激素联合IL-2促进供者调节T细胞体内选择性扩增减轻急性GVHD

Rational Choice of Urban Spatial Expansion in Zhejiang Province Based on Smart Growth

从精明增长的视角看浙江省城镇空间扩展的理性选择

Increasing Farmers Income: Improving the Environment and Extending Choice Limits;

农民增收:改善环境和扩大选择空间

Expansive Fiscal Policy, Fiscal Risk and Policy Choice;

扩张性财政政策、财政风险与政策选择

How to create,extend and select topics in exploring study;

研究性学习中课题的产生、扩展与选择

In selecting those characters by selection index, the efficiency of selection is dir-ectly proportional to the number of charactrs selected.

利用选择指数进行选择,选择效率有随参加选择性状数的增加而提高的趋势。

Student Loans Sponsorship:System Choice of Expanding China s Sponsorship Scale;

贷学金:扩大国家资助规模的制度性选择

The Choice of Macroeconomic Adjustment Policy and the Complexity of Stimulating Policy of Domestic Demand;

当前扩大内需的复杂性与宏观调控政策的选择

Comparative Study on Basis Expansion Models in Time-Selective Fading Channels

时间选择性衰落信道的基扩展模型比较

Selective reverse engineering strategy:the strategy of choice to enhance the science and technology innovation ability of our nation;

选择性反向工程战略——增强我国科技创新能力的战略选择

On the Relationship between Higher Education Expansion and Short-term Economic Growth--A Probe into the Policy-making of Chinese Higher Education Expansion;

试析高等教育扩张与短期经济增长的关系——兼论中国高等教育扩张的政策选择

Study on the Effects of Activated Carbon Nano-particles to Enhance Anti-hepatocarcinoma Drugs Selectivity;

纳米活性炭增强抗肝癌药物选择性的研究

Software Reliability Growth Models Selection Based on Multiple Evaluation Rules;

基于多评价准则的软件可靠性增长模型选择

Balanced Selection of Human Capital s Accumulation in China s Economic Growth;

中国经济增长中人力资本积累的均衡性选择

Use the regenerative principle to improve the gain and selectivity of the frequency converter;

利用再生原理提高变频器增益与选择性

The theoretical circuit,gain and selectivity of the regenerative frequency converter;

再生式变频器的原理电路及其增益与选择性

Practical Teaching is the Best Choice to Improve the Practicality of“Two Courses”;

实践教学是增强“两课”实效性的必然选择

The selection and benefit analysis on coal gas end cold and pressurized project

发生炉煤气终冷增压方案的选择与效益性分析