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A damped harmonic oscillator without a driving force was studied using canonical tramsformation; An exact wavefunction and energy level for the damped harmonic oscillator has Been obtained.
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摘要对于无外界驱动力且阻力与速度成正比的阻尼谐振子，通过正则变换，得出了阻尼谐振子的严格波函数及其相应能级。 |
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A dance of Latin American origin, resembling the rumba .
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伦巴舞是拉丁美洲的舞蹈. |
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A dance of Latin American origin, resembling the rumba.
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曼波舞一种源于拉丁美洲的舞蹈，类似于伦巴舞 |
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A dance similar to the samba.
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卡里奥克舞一种类似桑巴舞的舞蹈 |
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A dancer gives Rotarians and their families a taste of Native American traditions during the Rendezvous in the Park in Pioneer Park, Utah.
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一位舞者在犹他州的开拓者公园指定集结地的游乐区为扶轮社员和他们的家人表演一段印地安人传统风格的舞蹈。 |
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A dancer performs to the beat of techno music pulsing through downtown Zurich during its annual Street Parade August 9, 2003.
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随着工艺音乐的强劲节拍，一名跳舞者8月9日在瑞士北部城市苏黎士市中心劲舞。 |
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A dancer prepares before a performance at the annual New Orleans Jazz and Heritage Festival.
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舞蹈演员正在为一年一度的新奥尔良爵士乐和传统节日之前的表演做准备。 |
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A dancer who has to dance on the point of her shoes or turn around on one foot must be trained for a long period of time before she can sense her own center and balance herself.
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舞蹈演员（有时）需要以脚尖跳舞或单脚旋转，为了能找到自己的中心点并做到平衡，此前她必须接受长期的训练。 |
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A dancer with a painted monkey-faced mask emerged, possibly portraying the Monkey God Sun Wukong.
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一位带着猴脸面具的舞者出场，可能是描绘齐天大圣孙悟空。 |
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A dancing girl is animating the scene with grotesque gestures.
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一个跳舞的女孩以一些古怪的动作令这个场景生动起来。 |
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A danger foreseen is half avoided.
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预见隐患犹如防患一半. |
