查询词典 dissertation

In this dissertation, the properties of photoluminescence and electroluminescence from Ge-Si02 thin films and mechanisms of light emission have been studied.

本论文主要研究了Ge-SiO_2薄膜的光致发光和电致发光性质，讨论了可能的发光机理。

ABSTRACT Some new advances in transient electromagnetics are introduced in this dissertation, which presents further insight into the ener...

本论文介绍了我们在非正弦电磁波的辐射与传播研究中取得的一些新进展。

First, the dissertation summarizes the properties, developing state and application fields of BLDCM, then its fundmental structure; operation principle and control strategy is also presented. On the base of roundly analyzing all kinds of the drive motor in electromotion type railway switch, BLDCM is proposed to replace the formerly traditional DC motor in railway switch. Second, the whole design scheme and key technology of control system is put forward based on analyse of the technical parameters and requirements.

首先，论文介绍了无刷直流电动机的特点、发展和应用概况，分析了稀土永磁无刷直流电机系统的基本构成、工作原理和控制方法；在对目前各种电动转辙机驱动电机分析的基础上，提出将稀土永磁无刷直流电机用于铁路转辙机，以替换原有的串励有刷直流电动机。

With the object of electromotor, we realize a remote motion control system in the end of the dissertation.

在本文的最后结合对象交流电动机，利用可靠的控制方法实现了远程运动控制系统。

In this dissertation, the ion-trapping, fastbeam-ion instability and electron cloud effect in BEPC and BTCF are studied indetail.

本文对北京正负电子对撞机上的离子俘获、北京τ—粲工厂上的离子俘获和快束流-离子不稳定性、BEPC上的电子云效应都作了比较细致的研究。

The main work and innovations of this paper are listed as follows: 1、The basic equations of high density electron beam optics, as well as the numerical analysis methods are studied and built in the dissertation.

本论文的主要工作和创新之处在于： 1、研究了强流电子光学问题的基本方程组和数值求解方法。

In this dissertation, a more comprehensive and further investigation is conducted for the interaction of tread element with road surface, the influence of tread pattern design on tyre performance, and reasonable design of tread pattern.

本文对胎面单元与路面相互作用，胎面花纹对轮胎性能的影响，以及胎面花纹的合理设计等问题进行比较全面、深入的研究。

M.S. Dissertation:Studies on the derivation of novel elicitor leading via Ugi reaction and their biological activity

硕士学位论文题目：利用Ugi反应进行新型植物激活剂先导结构的优化及其生物活性研究。

In this dissertation, optimal initial ellipsoids are introduced into the ellipsoidal outerbounding algorithms, so as to improve the precision of identification.

对集员辨识的椭球外界算法，本文引入了优化的初始椭球，从而提高了辨识精度。

In this dissertation the elliptic curve cryptosystems and the related algorithms are investigated.

本文主要研究椭圆曲线密码和其中的有关算法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。