实验研究

The complexing properties of compounds 10a, 10b, 11a and 11b toward alkali metal ions were studied by 〓H NMR titration, ESI-MS, UV-Vis spectra, Fluoresence spectra and liquid-liquid extraction. The results show:(1) the 1:1 complexes were formed.(2) The calix-crown 10a, 11a have a higher selectivity for Na〓 ions, whereas 10b, 11b for K〓 ions.(3) The complexing ability toward alkali metal ions was enhanced when the calix-crown have side arm carbonyl.(3) The coordination of alkali metal ions toward phenoxy, carbonyl and crown ethereal oxygens take place by rotation around the carbon-carbon bond of carbonyl and methylene.

六，用〓H NMR滴定，ESI-MS，UV-Vis，Fluorescence，液-液萃取实验研究了10a，10b，11a和11b对金属离子的配位性质，研究结果表明：1）杯芳烃冠醚衍生物同碱金属离子形成了1：1配合物，化合物10a、11a对Na〓具有较高的配位能力，化合物10b、11b对K〓具有较高的配位能力；2）在杯冠醚环的旁边引入带有羰基氧原子的基团作为侧臂参与配位可以加强对碱金属离子的配位能力；3）金属离子分别同苯酚氧，羰基氧，聚氧醚链氧发生了配位，配位过程中侧链基团涉及到了羰基碳与亚甲基碳的碳碳键的旋转过程。

It makes the metal wools continuous, and increases the draw-resistance intensity and fatigue-resistance of the internal threads.

本文运用有限元模拟分析与实验研究相结合的方法，深入研究了该零件内螺纹冷挤压成形工艺。

The paper is based on the item the anti-rolling tank test setup among the school 211 key construction projects. Tank system design, control method of tank and correlation technique of simulation of the test rolling table are investigated mainly.

本论文U型减摇水舱和试验摇摆台实验研究是基于学校&211&重点建设项目&船舶减摇水舱试验装置&进行的，主要研究U型减摇水舱系统设计、U型减摇水舱控制方法和试验摇摆台模拟中的相关问题。

Based on the electromagnetic theory, analyze the character of electromagnetic force using two linear electromagnetic stirrers which were designed by our department. Investigate the rule of electromagnetic force and how the different parameter of casting and stirring influnce the solidification structure.

本文采用理论分析与实验研究相结合的方法，在实验室条件下，采用本系最新自行研制的行波磁场搅拌器对在行波磁场电磁搅拌作用下钢液内的电磁力特性、各种不同浇铸工艺参数以及搅拌参数对铸坯凝固组织的作用规律，进行了深入的研究。

By using TG analysis, the combustion characteristics of cooking oil tar in pipes were studied under heating rates of 5℃/min, 15℃/min and 25℃/min respectively.

采用热重分析法对餐饮业油烟道油垢的燃烧过程进行实验研究和理论分析，分别在5，15，25℃/min升温速率空气气氛中，研究油烟道油垢的燃烧特性以及升温速率对着火温度、可燃性指数的影响。

And then dynamic process including starting,losing step,reclosing and open-phase operations were analyzed with tine-stepping finite element method and field experiments.

首先研究了同步电机动态分析的共性问题，即局部电磁力、电磁转矩计算与场-路-运动直接耦合求解问题，进而对稀土永磁电机起动、失步、断相、重合闸等动态过程进行时步有限元分析和实验研究。

These results have very important referenced values to simulative calculations and experimental researches on drag and noise reduction with riblets under water.

本文的研究内容对随行波表面水下减阻降噪的仿真模拟计算和实验研究具有重要的参考价值。

For studying the performance of a self-sensor in the driving mode of variable-voltage control and variable time of flow control, a piston displacement measurement and control software based on LabVIEW (version 7.0) was designed, and the experimental study was carried out.

为了研究自传感器的性能，设计了一套基于虚拟仪器的活塞位移测控系统，分别对变电压驱动和变可控硅的导通时间驱动方式下的自传感器特性进行了实验研究。

The cause of uveitis is complicated, and is considered to be caused mainly by heat, toxicity, dampness and stasis etc to attack iris and pipul in TCM.

历代对五轮学说的研究大多停留在文献整理和临床验证基础上，随着现代科学的发展，五轮学说的内容有了进一步的扩充，但从实验研究的角度来探讨它的实质还远远落在时代的后面，为了使五轮理论更客观、更科学、更有效地指导临床，我们选择葡萄膜炎进行分析。

It has been demonstrated that it is possible to investigate the thermal response and thermal damage of tissue with photonics techniques.

生物医学光子学的相关理论与实验研究表明，将光子学方法用于生物组织热响应及热损伤的研究是可能的。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新