查询词典 theoretical research

This paper puts forward a new type transmission of swing link rack drive,discusses its structure and principle of transmission, analyses its authenticity of movement and transmission feature, which provides a theoretical basis for further research.

通过机构演化提出了摆杆齿条变程器这种新型传动机构，介绍了此机构的结构和工作原理，讨论了其运动的确定性，概括了其传动特点，为该机构的进一步研究提供了理论基础。

The research results provide theoretical principles for the X type SMA plate damper's design and application in practical engineering.

研究结果为X形SMA板式阻尼器的设计和工程应用提供了理论依据。

Firstly in the paper the research of hydraulic characters and the optimize of structure have being carried out on the four bigger design schemes of permanent internal dissipation discharge tunnel reconstructed from the right banks diversion tunnel of Gongboxia Power Station with a method of theoretical analysis combined with test comparisons. On this basis , two form swirling flow internal dissipation schemes, vertical and horizontal axis are recommended to the construction unit of the station as the schemes to be selected next.

本文采取理论分析与试验比较相结合的方法，首先对黄河公伯峡水电站右岸导流洞改建为永久式内消能泄洪洞的四个较大设计方案进行了水力特性的试验研究与体型优化，在此基础上，向建设单位分别提供了竖井旋流内消能的推荐方案与水平旋流内消能的推荐方案。

Finally, the influence of permanent tide is recalculated using the same precise development of TGP. This work can be taken as a theoretical reference for the research of highprecision space geodesy and astrogeodynamics. tide-generating potential ; station displacements ; spectrum method ; Love/Shida number

最初的Love数和Shida数是由静态球形地球的潮汐模拟理论推求的，由于地球是旋转椭球形的天体，地球形变对引潮力位的响应存在着不同调和函数的微小混合，这样Love数和Shida数就与测站纬度和TGP的调和级次有关，纬度特性可通过引入一组常数来表示，最初的结果由Wahr

In discussing the "paradigmatic period,"(since 1980) the author addresses the four necessary conditions for formalizing a paradigm:(1)the common community of researchers of science education must be founded;(2)the academic journal for exchanging findings of research must be set up;(3)those who conduct researches in the field must be conscious of and make efforts to the theory-building; and (4)disciplines relevant to science education are to provide it with theoretical resources for its development.

在论述科学教育学&范式&确立时期(1980年以后)时，笔者阐述了科学教育学范式的建立必须具备的四个条件：(1)必须形成科学教育研究的共同体；(2)必须创办本学科的学术期刊，供研究人员交流研究成果；(3)必须对学科自身的理论建设有自主意识和自觉的努力；(4)必须有相关的理论学科和其他相邻的学科为科学教育学的发展提供理论资源。

To investigate the the body shape strength and kinematics thateffects sprint expert performance 17 healthy male sprinters weremeasured using SongxiaM9000 high speed vidicon in the field; body shape of sprint athlete were tested by steel rule; Meanwhile shoulder were tested at 60, 240and360 deg/sec velocities ; lower limb were tested at 60, 240 deg/sec velocitues using Biodex-II tesing and rehabilitation system in the laboratory This research provide theoretical basement to scientifically make reasonable exercise prescription and perfect sprint theoryThe result show that (1) The results of correlation indicate that 100M performance related to the shoulder fast flexion torque and hip flexion/extension torque^ ankle fast dorsiflexion torque ;(2) The upper arm relaxing enclose and lower limbs length effect 100Mperformance;(3) The biggest shoulder extension joint, swing rage of shoulder and the biggest elbow joint extension effect 100M performance.

使用松下M9000高速摄像机对100米跑动过程中的运动员进行录像，同时测试短跑运动员100米成绩，利用爱捷录像分析系统获取运动学参数；用人体测量尺测试短跑运动员的肢体围度；同时采用Biodex-Ⅱ型等动测力及康复统，测试运动员上肢肩关节及下肢髋、膝、踝3个关节的等速屈伸肌力。在角速度60°／s、240°／s和360°s下测试肩关节等动向心收缩肌力；在角速度60°／s9慢速和240°／s及120°／s下测试下肢3关节等速向心及离心肌收缩肌力。分析肢体围度、各关节肌肉力量和运动学参数与100 影响河北省二级以上短跑运动员专项成绩的因素。一身体形态、力量素质和运动学参数米成绩的内在联系，为合理制订短跑力量训练和完善短跑理论提供理论依据。结果表明；肩带肌群肌力矩确实与100米成绩呈显著高度相关，同时髓关节屈伸力矩比、踝关节背屈力矩与100米跑成绩呈显著中度相关，可能《是影响100米的因素之一。（2）上臂紧张围、上臂放松围与100米跑成绩呈显。著中度相关；最大肩关节伸角、肩关节摆动幅度和最大肘关节伸角与 100 米成绩呈显著中高度相关。

Based on the characteristics of twin stern hull form of a fast speed passenger ship, this paper carries out the theoretical design and experimental research of energy saving appendages around the flow field of screw propeller.

针对双尾快速客船的船型特点，以具有典型性的优良船型为母体，围绕螺旋桨流场，进行导轮、尾框鳍、舵球等附体的理论设计与试验研究，探讨适用于内河快速客船的几项附体节能技

The research results show that the steam inlet pressure and water inlet temperature are the main factors which affect the lifting-pressure performance; the steam injector have the characteristics of self-adaptive outlet pressure and constant outlet flow rate; the theoretical maximum lifting-pressure coefficient calculated could be high as 14 and the experimental value is 3.0, which could be high as 1.5 even if the water inlet temperature is high as 95℃. The noise of steam injector could be induced from 80db to 50db.

研究出该升压技术具有定流量特性、出口压力具有自适应特性，计算得出的理论极限升压能力的升压系数可达14，实验得出的最大升压能力为进口蒸汽压力的3倍，进口水温达到95℃时其升压能力还可达到1.5倍，噪音从目前的80db减少为50db。

The factors affecting the stair-step height are analyzed and the research results provide theoretical basis for the building orientation and slicing parameters of the prototypes.

左右的侧表面次之。分析了影响侧表面台阶高度的各种因素，找出了影响规律，给出了台阶高度的计算公式。

The research of this paper offers the theoretical and referenced data for the further study and application of the spiral stairs made of steel plate.

文中提供的设计实例分析为板式钢结构旋转楼梯的研究与应用提供了技术手段和参考资料。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。