查询词典 dissertation

This dissertation deals with the synthetic method of benzotellurazoles containing various substituents in benzene nuclei: introducing tellurium atom to the acetanilide derivatives in ortho-position by direct or indirect ways, then reduced and cyclized to give substituted benzotellurazoles directly or indirectly.

本文系统研究了含各类取代基的苯并碲唑杂环的合成方法，即向原料中用四氯化碲以直接或间接定位的方法引入碲，再经过直接或间接还原关环法制备苯并碲唑。

In this dissertation, the key technologies in the development of the CAD/CAM software based on ACIS geometric engine are studied in depth.

计算机辅助设计与制造技术是近30年来迅速发展起来的新技术，是现代制造技术的重要组成部分。

This dissertation studies the key technique of intelligent mine passive acoustic fuse, according to the demand of...

本文根据反武装直升机智能雷弹研制的需要，深入研究了智能雷弹被动声引信中的几个关键技术。

This dissertation studies the key technique of intelligent mine passive acoustic fuse, according to the demand of the research of weapon against armed helicopter.

本文根据反武装直升机智能雷弹研制的需要，深入研究了智能雷弹被动声引信中的几个关键技术。

This dissertation describes the development of the modern acoustics, related measure standard and equipment at the beginning.

本文介绍了现代声学的发展及声学测量标准和声学测量仪器在国内外的发展概况。

Research of the dissertation is based on the high-speed data acquisition system.

本文的研究工作以高速数据采集系统为基础。

In chapter Ⅵ, the vibration data acquisitor system in this dissertation is summarized.

第Ⅵ章，对本文的振动数据采集器系统，进行总结。

In chapter 8, the research works of the project have been summarized, and the research and application prospects in the future are forecasted. In the Part B of this dissertation, the DSP based vibration data acquisitor system for rotating machinery has been developed.

论文下篇，以工程应用为目的，以微电子技术、信号处理技术、数字信号处理器DSP和微机应用技术为手段，研制了基于DSP的振动数据采集器系统。

ABSTRACT In this dissertation, the dynamic process, the constitutive relation and the action between reinforcing steel bar and the concrete are systematically studied on the basis of the former research.

本文在前人研究工作的基础上，对弹体侵彻、贯穿钢筋混凝土的动力学过程、本构模型和钢筋与混凝土之间的作用等问题进行了深入的研究。

To the later, this dissertation has been done transient dynamic analysis, calculated the stress intensity factors changing with the damp of asphalt pavement, the cycle of load action and the parameters of pavement structure.

应力强度因子最大值随荷载作用周期的变化呈倒"S"状变化，在高频和低频荷载作用时，逼近静载作用时的应力强度因子值，在一定的频率出现最大值和最小值，但应力强度因子的变化幅度不大。

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。