On the ba- sis of the relevant documens and field investigation , this paper comes to a conclusion that the wall of Nanjing city had built from 1360A. D. to 1398 A. D. , 39 years in all .
本文根据史料并结合实地勘察，提出南京城墙建造的起至时间为元至正二十年（1360年）至洪武三十一年（1398年），前后共计39年。
In addition, the investigation and analysis for the scientific research level of Ph. D. in engineering specialty also provide references for the training.
此外，对工科博士研究生科研水平的调查和分析，也为培养工作提供了参考意见。
A voltammetric and control potential electrolysis investigation of the direct electro-oxidation decarboxylation of D-gluconate ion to D-arabinose on spectroscopic graphite electrode is reported.
报导了用伏安法和恒电位电解法在光谱石墨电极上直接电氧化d -葡萄糖酸钠合成d -阿拉伯糖的研究结果。
The paper reports the results of an investigation of the characteristic of combustion pressure oscillation in a D. I. diesel engine and their effect on engine noise.
本文报告了对直喷式柴油机燃烧压力振荡特性及压力振荡对燃烧噪声影响规律的研究。
This paper reports the investigation of the effects of the intake turbulence and the squish turbulence on the performance of a D. I. diesel engine.
本文介绍了由不同几何形状的进气扰动片和燃烧室产生的进气紊流和挤压紊流对直喷式柴油机性能影响的研究。
The progress of hard anodizing investigation employing A. C. superimposed on D. C. , pulse current and alternating cu…
着重评述了交直流叠加，脉冲电流和交流电源在硬质阳极氧化研究中的进展情况。
The investigation results show that two transmittance peaks exist at the crossover of the two photonic crystal PBG in 1-d dual-periodical photonic crystal.
研究发现：一维双周期光子晶体的光子带隙结构中在两光子晶体带隙交叠处具有很明显的两共振透射峰。
ZHU Jun. Motion Control Investigation of Pipeline Ispection Robot[D]. Guangzhou: South China University of Technology, 2012.
[1]祝俊。管道检测机器人的运动控制研究[D]。广州：华南理工大学， 2012。
On the basis of site investigation and comprehensive analysis, the 3-D geomechanical modelling tests were conducted for study of the fault activities in Xi'an area.
在对地质原型研究的基础上，采用相似材料三维地质力学模拟方法，对西安地区的断裂构造活动性进行了两个方案的模拟试验。
ZHONG W. Experimental investigation of rail damnification mechanism [d]. Chengdu: Southwest Jiaotong University, 2011.
[15]钟雯。钢轨的损伤机理研究[d]。成都：西南交通大学，2011。
For this reason, the lithological trap investigation has been carried out on the basis of full 3-d seismic migration data.
为此，以全三维地震偏移资料为基础的岩性圈闭研究得以开展。
In this paper, investigation on molding process of the 3-d sandwich woven composite, emphases introducing the VARIM molding processes. the experimental samples were made.
研究了三维中空复合材料的复合成型工艺，重点介绍了真空辅助成型工艺。
The measuring of the 3-d mechanical properties of the small artery is significant for the investigation and clinical diagnosis of vascular surgery and evaluation of treatment efficiency.
小动脉三维力学特性的检测，对于血管外科疾病的研究和临床诊断以及对于治疗效果的评价是十分重要的。
The investigation of the upstream-downstream intermittent reversing flow in the near wall of a 2-D channel is attempted with a 2-D laser doppler velocimeter (LDV).
本文应用二维激光多普勒测速仪（LDV），对二元通道内近壁间歇性反流特征做了尝试性测量。
The investigation shows that FHDBC can reflect the real structure of 3 D braided fiber composites.
研究表明枝状胞体模型能较为真实的反映三维四向编织复合材料的结构构形；
The investigation shows that FHDBC can reflect the real structure of 3 D braided fiber composites.
研究表明枝状胞体模型能较为真实的反映三维四向编织复合材料的结构构形；
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