parallel bars
- parallel bars的基本解释
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双杠
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- parallel bar
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Based on the instantaneous motion of the moving platforms, the uncertainty configuration conditions and simplified uncertainty configuration equations are obtained for the widely studied parallel manipulators, such as planar 3-DOF parallel manipulator, spherical 3-DOF parallel manipulator, 6-SPS triangular platform parallel manipulator, three-branch 6-DOF parallel manipulator, twotriangular-platform parallel manipulator, DELTA parallel manipulator, 5-DOF parallel manipulator, two-tetragonal-platform parallel manipulator, pentagonal platform parallel manipulator and Stewart platform parallel manipulator.
采用这一方法,根据国内外常用的并联机器人机构的形式,建立了平面3自由度并联机器人、球面3自由度并联机器人、三角平台并联机器人、三支链6自由度并联机器人、双三角平台并联机器人、DELTA并联机器人、5自由度并联机器人、双四角平台并联机器人、五角平台并联机器人和Stewart平台并联机器人的奇异位形条件方程,除了Stewart平台并联机器人外,这些条件方程均为低于6阶的行列式,机器人结构类型不同,其简化程度各不相同。
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Results revealed that the large side insulation of the stator bar in slot is available for ultrasonic pulse-echo testing; Coupling transducer on the surface of a practical stator bar could minimize the influence on the measurements of velocity, contributing no destructivity of the ultrasonic testing for stator insulation; The simultaneity of same velocity and higher attenuation can be used to detect insulation delamination from conductors; Compared with the wide sides of the bars in slot, the short sides of the bars near the exit from slot and the end bars had a same velocity and a higher attenuation; The velocity might be exactly measured on the shot sides of the bars near the exit from slot and the end bars, while the attenuation might not, which were examined though filed tests; V min decreased greatly and V av decreased slightly with the service time of the bars.
在实验室对线棒多种结构处的主绝缘和不同运行年数(未老化、16、18 和23年)线棒的主绝缘进行了低频超声反射法检测试验,并进行了现场试验,发现(参见 Hao et al, IEEE DEI, to be published),槽部线棒的宽面绝缘不受换位绝缘的影响,比窄面绝缘更适合超声测量;线棒表面平滑的半导体层减小了耦合剂对超声测量的影响,实现了无损性;波速不变而声衰减减小可以检测线棒出现绝缘与导体脱壳缺陷;出槽口和端部线棒的窄面绝缘与槽部线棒的宽面绝缘相比,声衰减大而波速一致;现场试验验证了波速不受绝缘结构和现场测试条件的影响,而声衰减受以上因素影响很大(参见 Hao et al,中国电机工程学报, Vol.23 No.4); V min 随运行年数明显减小, V av 随运行年数慢慢越小。
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Firstly, according to electromagnetic field theory, the 2-dimensional (2-D) mathematical model of a three phase squirrel-cage Y802-2 induction motor is developed. Then general equations can be deduced from finite element discrete and functional analysis. The motor's 2D solving region of electromagnetic field is given based on the boundary conditions and assumption conditions of the squirrel-cage induction motor. Through finite element mothod and inner–outer convergence method, magnetic field distributions and magnetic forces of bars can be calculated in following rotor conditions: health rotor, one single broken bar, two adjacent broken bars, two broken bars with one good interval, two broken bars with two good interval and four adjacent broken bars.
本文首先根据电磁场理论建立Y802-2型三相笼型感应电动机二维电磁场的数学模型,并对其进行了有限元离散以及泛函分析,推导出总体方程;在基本假设和边界条件基础上,给出笼型感应电动机二维电磁场的求解区域,然后应用有限元并结合内外双收敛方法,对样机稳态运行进行数值计算,得出电机在转子完好、一根导条断裂、连续两根导条断裂、间隔一根两根导条断裂、间隔两根两根导条断裂及连续四根导条断裂六种情况下的磁场分布和导条所受电磁力的变化情况。
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parallel bars:双杠
就知道水疗的疗效,古今中外皆然,不论是古罗马的人工温泉、英国巴斯(Bath)温泉圣地、秦始皇的骊山汤、芬兰人的桑拿(Sauna)三温暖、日本人的「泡汤」,和近年来或在水中做步态行走训练,利用水中的双杠(parallel bars)或浮袖(water wines)来协
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parallel bars:(答案:双杠)
3m springboard event (答案:三米跳板) | parallel bars (答案:双杠) | road events (答案:公路赛)
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parallel bars:双扛
单扛 horizontal bar | 双扛 parallel bars | 高低扛 uneven bars; high-low bars
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parallel bars:双杠的
horizontal bar 单杠的 | parallel bars 双杠的 | rings 吊环的
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uneven parallel bars:高低杠
12.帆船sailing | 1 3.高低杠uneven parallel bars | 14.古典式摔跤Greco-Roman wrestling
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