查询词典 research engineering

The bulk of solid-state physics theory and research is focused on crystals , largely because the periodicity of atoms in a crystal — its defining characteristic —facilitates mathematical modeling, and also because crystalline materials often have electrical , magnetic , optical , or mechanical properties that can be exploited for engineering purposes.

固体的内部结构和运动形式很复杂，这方面的研究是从晶体开始的，因为晶体的内部结构简单，而且具有明显的规律性，较易研究。以后进一步研究一切处于凝聚状态的物体的内部结构、内部运动以及它们和宏观物理性质的关系。这类研究统称为凝聚态物理学。

Metal solidification processing has been an important research subject in materials science and engineering.

金属凝固是材料科学和工程领域中的重要研究课题。

Its main role is: prevention and remediation of water, air, sound pollution and solid contamination, water supply and sewerage engineering design, the design, research and development of new technology and new equipment.

其任务是掌握水、气、声、固体污染物的防治和治理、给排水工程设计、环境管理与修复以及环保领域新理论、新工艺和新设备的设计、研究和开发。

Many advanced measure methods and technological means were applied to research space stress state at engineering region.

采用多种先进测试方法和技术手段，研究工程区岩体的空间应力状态

GuoShouJing his ancestors in the Yuan Dynasty in China are well-known astronomer, mathematician, hydraulic engineering experts, he advanced mathematics, spherical geometry, triangulation has become highly literate, living in the home environment such郭伯of jade, from the favorite Math, especially for simpler and quicker abacus, but also aroused the interest of his research, he studies at abacus are enormous achievements, the Qing Dynasty famous mathematician Mei-ting in the "ancient Yan count slightly," Chu said plate of law, began in the early Ming郭伯jade, jade郭伯abacus at laws on the tremendous contribution to the world people have been referred to as "beads set of laws," the creators

他的先辈郭守敬是我国元代著名的天文学家、数学家、水利工程学家，他对高等数学、球面几何、三角都有很高的造诣，生活在这种家庭环境中的郭伯玉，从小就喜爱数学，尤其对简便、快捷的珠算，更引起他研究的兴趣，他在珠算研究上的成就是巨大的，清代著名数学家梅文鼎在《古算衍略》中说珠盘之法，始于明初郭伯玉，郭伯玉在珠算之法上的巨大贡献，被世人人称为"珠盘之法"的创制者

First, the ICF and the fast ignition are introduced simply. Secondly the basic concepts and theories for laser-plasma interaction are expatiated, then the recent research status, the generation mechanisms of spontaneous magnetic field during the interaction of laser-plasma are described in detail. Finally the introduction is focused on the experiment setup and results of spontaneous magnetic field on 20TW laser facility in China Academy of Engineering Physics Key Laboratory.

论文简单介绍了惯性约束聚变和快点火的概念，阐述了激光等离子体相互作用相关的基本概念和基础理论，比较全面地阐述了激光与等离子体相互作用中自生磁场的研究现状、产生机制，并详细介绍了在高温高密度国家重点实验室20TW超短超强激光装置上利用高次谐波伴线结构法取得的自生磁场测量结果。

The meeting heard of the Engineering Research Center for nearly a year's work report and examine and discuss the next stage of development direction and points here.

会议听取了工程技术研究中心近一年来的工作汇报，并审议讨论了下阶段的发展方向与工作要点。

In the 21st century, Stallone environmental engineering company more attention to environmental quality of equipment and related technology research and promotion and application.

面向二十一世纪，泰隆环境工程公司更加关注环保设备质量和相关新技术研究，并推广和应用。

The PID parameter tuning of non-linear control system is set as the engineering background. The aim is the optimal design of PID parameter. On the basis of the design and research of the advanced PID parameter tuning, the mathematical model-transfer functionis developed through correlation analysis on statistical method.And with the optimization algorithm under constraint condition, the non-linear, Isqnonlin is set as object function. Then with connection of the non-linear constrain optimization algorithm and simulink technique, a set of adjust parameters which fit the performance index of the control system are found. And optimization design process and steps are provided.

本文以非线性控制系统PID参数整定为工程背景，以PID参数的优化设计为目标，在分析和研究国内外PID参数先进整定方法的基础上，运用相关分析实验统计方法建立对象的数学模型——传递函数，把PID参数设计问题转化为一种非线性优化设计问题，借助于约束条件下的优化算法，以非线性最小平方指标为目标函数，将非线性约束优化算法同Simulink仿真技术相结合，找出符合控制系统品质指标的一组调节参数。

From the perspective of engineering materials research, the microstructure of root, stem and leaf of wheat were observed and analyzed in using electron microscope technology.

根茎叶具有的强度和刚度，是小麦在复杂外力作用下能正常生长的主要原因，是根茎叶资源工业开发利用的基本依据。2。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。