用定向凝固技术制作单晶铸件；摸索合理可行的工艺方法；分析晶粒生长淘汰过程。
Single-crystal casts are obtained with the technology of directional solidification, the reasonable technique is discussed and the growing process of single crystal is analyzed.
分析了定向探测器的工作原理和目标方位识别的关键技术，并对探测天线的设计做了详细的分析和计算。
The work principle of directional detector and the key technique for identifying target bearing are analyzed. Design and calculation of detecting antenna have been carried out.
通过对水溶采矿方法的对比，分析双井对接连通采卤的优劣，以及人工受控定向技术在井矿盐中的应用和未来发展趋势。
Through contrasts of the solution mining, this paper introduced situations of the brine mining in the connected double wells and applications of the directional technology in the mine wells.
分析了定向探测器的工作原理和目标方位识别的关键技术，并对探测天线的设计做了详细的分析和计算。
The work principle of directional detector and the key technique for identifying target bearing are analyzed.
对异步电动机磁场定向控制技术中的电流控制概念进行了分析，综述了近年来的各种电流控制方案，重点评述了基于PWM逆变器的各种电流控制技术。
This paper passes on the current control concept in the field-orientation control of induction motor drives presents recently current control techniques, reviews emphatically PWM current controllers.
本文结合激光散斑测速技术（LSV），应用激光散斑过零法对定向流动的纳米流体中纳米粒子的运动状态进行了理论分析及实验研究。
In this paper, combined with the idea of Laser Speckle Velocimetry (LSV), experiments are carried out to measure the velocities of nano-particles in directional nanofluids with Zero-Crossing Method.
目的分析CT引导的立体定向脑内病灶活检术的组织病理学诊断结果，并对手术操作方法和技术要点进行总结。
Objective to analyse the histological diagnostic results of stereotactic biopsy for brain lesions under computer tomography guidance, meanwhile, to explore the operation techniques of brain biopsy.
目的分析CT引导的立体定向脑内病灶活检术的组织病理学诊断结果，并对手术操作方法和技术要点进行总结。
Objective to analyse the histological diagnostic results of stereotactic biopsy for brain lesions under computer tomography guidance, meanwhile, to explore the operation techniques of brain biopsy.
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