低技术的

Code Division Multiple Access is one of the cardinal multiple access technologies due to its good antinoise performance, security and low power in the system of the third generation mobile communication.

码分多址技术凭借其良好的抗噪性、保密性和低功率等优点成为主要的无线接入技术，今后的3G系统主要采用的也是CDMA技术。

In this part, carrier interferometry technique is combined with MIMO-OFDM architechure, resulting in the so called MIMO-CI/OFDM system. It is shown that the novel system can achieve dramatic performance gains by taking advantage of large frequency diversity inherent in the CI/OFDM technique. Further more, the proposed MIMO-CI/OFDM system has a more stable envelope and, ultimately, an average PAPR far smaller than that of MIMO-OFDM.

将载波干涉技术与多天线OFDM技术相结合实现了一种MIMO-CI／OFDM结构，由于CI／OFDM具有大的频率分集作用，该结构因而获得显著的性能增益；而且由于采用CI技术使得发射信号的包络更加平稳，与原有的MIMO-OFDM系统相比具有较低的PAPR。

To enable customers to use the Ingersoll-Rand products to be cost effective, my company free of charge for users of air system technology to provide pre-sales consulting, sales Engineer Onsite Technical Exchange; aftermarket boot debugging, operator training; air compressor to run full tracking service .

为使客户使用的英格索兰产品实现低成本高效率，我公司为用户免费提供售前空气系统技术咨询、销售工程师上门技术交流；售后开机调试、操作人员培训；空压机运行全程跟踪服务。

For further improvement in the control and uniformity of the reliability performance, a modified STI module and modified cell drain side engineering are proposed and verified on a 256K NOR-type embedded low-power flash test vehicle.

未来在控制可靠度均匀性的改善方面，我们提出一种修正型STI绝缘技术模组和元件汲极侧工程两种技术，并使用256K NOR-type内嵌式低功率快闪元件加以验证。

Because of the relatively low level of technology, and imperfect investment environment, Greenfield is the main mode of MNCS investments in China, and effects of technology spillover are not yet clear.

由于目前我国企业技术水平相对较低，投资环境尚不完善，跨国公司对我国的投资主要是以新建投资为主，其技术溢出效果尚不明显。

Most of the China South Seas situated around the magnetic equator, belong to the low magnetic latitude area, where rocks are magnetized horizontally and the property of the Δ T is different with the other areas of Chinese Mainland.

我国的南海大部分海域位于磁赤道带附近，属于低磁纬度区域，以水平磁化为主，磁性体产生的Δ T 异常特征与中国大陆广大地区的Δ T 异常特征差别较大，且南北跨度大，达两千余公里，通常的化极技术在该区域很难取得良好的效果，虽然化赤方法在低纬度地区算法稳定，并通常能取得较好的结果，但是目前针对化赤异常的解释技术却相对较少；本文结合南海地区的航磁数据，对几种常用的化极技术进行了对比与分析，并对化赤技术进行了简要的介绍。

The results suggest that the mountainbased occultation technique is a potential new method for monitoring lower atmospheric environments.

实验结果和原理研究表明，山基掩星观测技术是一种潜在的低层大气环境监测新技术。

Two processes to prepare Ba-ferrite particles for low density magnetic recording made by ceramic techniques are introduced in this paper.

介绍了采用陶瓷技术制备低密度磁记录钡铁氧体磁粉的两条技术工艺。

For this, on the foundation of narrating the contents, characteristics of teachers modern in...

为此，本文在简述教师现代信息技术素养的内容、特点的基础上，分析了教师现代技术素养的现状，并对教师现代信息技术素养普遍较低的原因进行了探究；论述了现代信息技术在教育教学工作中的重要作用，提出了教师面临着学习的严峻挑战。

There are some questions such as forest fire model selection, forest fire model updating, verifying simulation accuracy and so on in traditional forest fire spreading system. Study purpose is to build an innovative forest fire spreading simulation system based on DDDAS in this paper. The system can increase precision of forest fire spreading simulation by model base, model selection, model updating and so on. It can provide a strategic decision for forest fire save and new technologies demonstration for other related field of research. The research encompasses several major topics:(1) This paper brings up the term of dynamic data driven forest fire spreading simulation system and supplies new research approach and thought for forest fire spreading simulation study. The system framework was brought.

本研究针对传统林火模拟过程中存在的模型手动选择难度大、模型修正数据获取效率低、模拟精度验证困难等问题，以DDDAS为林火蔓延模拟研究的技术范式，提出林火蔓延模拟全新的技术框架体系，解决模拟系统建设过程中的模型库建设与管理、模型适宜性选择、模型自适应修正、模拟过程实时验证等关键技术，建立林火扩散模拟和实际林火发展之间相互协作、共生的林火扩散动态模拟系统；提高林火蔓延模拟精度，将林火蔓延模拟真正应用到林火扑救指挥过程当中，在实践上为林火扑救指挥提供决策支持，在理论上为相关领域的空间扩散模拟研究提供新的思路和技术范式。

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。