查询词典 research engineering

National Engineering Research Center of Turbogenerator Vibration, Southeast University, Nanjing 210096, China

东南大学火电机组振动国家工程研究中心，南京 210096

In accordance with the technological difficulties encountered in the process of insulation supervision based on the Dissolved Gases Analysis,several kinds of model and method are presented to improve the reliability and precision of fault diagnosis of the power transformer. Main research content includes:By deeply studying the common transformer faults diagnosing methods,such as three-ratio methods and improved electrical committee agreements,several shortcomings such as uncertainness judgment when the fault reasons,phenomenon and principles come out together while can not consistent to each other etc. For this reason,the old methods can not fully meet the need to engineering practical application.Considering fuzzy relationship matrix can fully represents the causality between fault symptoms and fault types,when diagnosing complex equipments with multiple symptoms and fault causes such as power transformer,a synthetic fuzzy diagnosing model is firstly proposed to diagnose transformers insulation faults based on DGA in this paper. Meanwhile,by further study the character of fuzzy factors,aimed at correcting the defects in classifying fuzzy sets of common fuzzy judgment,a method are put forward by unifying fuzzy synthetic diagnosis and fuzzy principle reasoning.

本文针对应用油中溶解气体分析方法进行变压器绝缘监督时所遇到的主要技术难点，提出了提高变压器故障诊断的准确性、可靠性的几种模诊断方法，主要研究内容有：通过对判断变压器故障常用的三比值法和改良电协研法的深入分析，其诊断准确率较高，但对故障原因、故障现象和故障机理间同时存在不确定性和模糊性的变压器等电气设备的故障诊断，难于满足工程应用的需要；在处理变压器等结构复杂设备的多症状、多原因故障诊断时，模糊关系矩阵可以全面反映这种症状与故障类型间的因果关系，进而提出了变压器故障诊断的模糊综合诊断模型；同时作者还深入分析了模糊算子的特性；针对常用的模糊评判结果的模糊集的集化方法的不足性，提出了将模糊综合诊断与模糊规则推理结合起来进行故障诊断的方法，能达到较好的效果。

Surface reconstruction of unorganized 3D points is one of the most important research problems on reverse engineering.

三维散乱数据点的曲面重构技术是逆向工程中非常重要的研究课题之一。

National Feed Engineering Technology Research Center, China Agricult ural University , Beijing 100094 , China

中国农业大学国家饲料工程技术研究中心，北京100094

Objective To sum up the research advances in urethra reconstruction with tissue engineering techniques.

目的综述组织工程技术在尿道重建中应用的近况。

Second, Valet research and development, production machinery electronic detection equipment, provide engineering and technical solutions.

二、代客研发、制作电子机械类检测仪器设备，提供各类工程技术解决方案。

From above, the research project is of great significance in theory and practical value in engineering.

因此，该题的研究具有重要的理论意义和工程应用价值。

Therefore, the research of this dissertation is provided withsignificant theory meaning and engineering practical value.

因此本文的研究具有重要的理论意义和工程应用价值。

Based on the results of the survey, research was made on the status and attributive characteristics in interpersonal competew:e of students in universities of technology, with emphasis 'aid on the comparisons bet}.veen male and female students, art and engineering majors, sophomores and juniors, st;.}dents from countryside and those from cities. Relative analyses were also conducted on the attributive characteristics of students with dift'erent competence level.

根据测试的结果，对工科院校大学生的人际交往能力状况和归因特点进行了探讨，重点对男女大学生、文科专业和理工科专业学生、大二和大三学生以及来自农村和城市的大学生进行了研究，同时还对不同交往能力的大学生的归因特点也作了相应的分析。

Two combine tunnel engineering example are mainly studied, Firstly, research surrounding rock videotex analysis and prediction disaster ahead excavating face.

研究隧道掌子面地质信息数字编录识别技术是为了发展隧道掌子面地质编录法，它主要是利用数字图像处理技术代替地质素描图，利用图像处理的模式识别技术代替专业人员对岩体节理、裂隙、层理等微构造发育情况的分析认识。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。