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     By the testing result of the infraredradiation ratio of tourmaline combining with the analysis of infrared spectrum graph, it can beconcluded that the essence of tourmaline having high infrared radiation ratio consists in theexisting of many infrared active vibrant bonds, which is different from the conclusion drawn byYang Ruzeng, etc, “the crystal structure character and pyroelectricity effect of tourmaline are themain reason for its stronger infrared radiating”.
     通过红外发射率的测试结果并结合红外光谱谱图分析,得出与杨如增等人关于“电气石的晶体结构特征及其热释电效应是其产生较强红外辐射的主要原因”的不同结论,即电气石具有高红外发射率的本质在于其具有多种红外活性振动键
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     the stretching vibration v(C-C) of C-C bond ;
     C-C的伸缩振动v(C-C);
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     The Vibrational Frequency of the Chemical Bond A-H
     A-H振动频率
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     VIBRATIONS OF A PIPE LINE
     输水管的振动
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     Vibratory Stress Relief
     振动时效
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     THE BOND WAVE FUNCTION
     函数
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The docoument discusses the method of applying the bond graph theory to the automobile ride comfort simulation analysis: establish the automobile four freedom degrees vibration bond graph and connect it with the block diagram of the Matlab Simulink simulation toolbox simulation,then directly use the Simulink visible function to realize the automobile ride comfort visible simulation.The bond graph and the Simulink simulation toolbox connection may cause the bond graph theory more easy and quick in the automobile...

The docoument discusses the method of applying the bond graph theory to the automobile ride comfort simulation analysis: establish the automobile four freedom degrees vibration bond graph and connect it with the block diagram of the Matlab Simulink simulation toolbox simulation,then directly use the Simulink visible function to realize the automobile ride comfort visible simulation.The bond graph and the Simulink simulation toolbox connection may cause the bond graph theory more easy and quick in the automobile system simulation analysis research.

探讨键图理论用于汽车平顺性仿真分析的方法,将所建立的汽车四自由度振动键图模型与Matlab的Simulink仿真工具箱仿真方框图相连接,直接利用Simulink的可视化功能,实现汽车平顺性可视化仿真。键图模型和Simulink仿真工具箱的连接可使键图理论在汽车系统仿真分析研究中更为简便、快捷。

THz(terahertz)properties of MgF_2 crystal(sample 1)and MgF_2:Co crystal(sample 2)is measured using transmission THz time domain spectroscopy in the frequency range between 0.5 and 2.5 THz.The absorption coefficients α(ν)of sample 1 increases and has a maximum 24cm-1 with increasing frequency ν from 0.5 THz to 2.5 THz.The absorption coefficient of sample 2 is much larger than that of the sample 1,and its absorption band edge of the crystal lattice shifts to lower frequency side because of the dopant Co.Moreover,there...

THz(terahertz)properties of MgF_2 crystal(sample 1)and MgF_2:Co crystal(sample 2)is measured using transmission THz time domain spectroscopy in the frequency range between 0.5 and 2.5 THz.The absorption coefficients α(ν)of sample 1 increases and has a maximum 24cm-1 with increasing frequency ν from 0.5 THz to 2.5 THz.The absorption coefficient of sample 2 is much larger than that of the sample 1,and its absorption band edge of the crystal lattice shifts to lower frequency side because of the dopant Co.Moreover,there is an absorption peak at 1.9THz and the absorption coefficient is greater than 70 cm-1,the force constant K of F-—Co 2+ ionic chemical bond stretch vibration calculated from this peak is 3.40×10-2 N/cm.The THz spectroscopy can be an important technique for research of chemical bond in crystal.Real dielectric functions between 0.5 and 2.5 THz of the two samples are calculated by relations between optical constants.The ε_1(ν)of sample 1 varies from 4.67 to 4.73 and ε_1(ν)of sample 2 varies from 4.62 to 5.01.

利用THz时域光谱技术对MgF2晶体(样品1)和MgF2:Co晶体(样品2)在0.5—2.5THz的吸收特性进行了研究.在0.5—2.5THz波段,样品1吸收系数α(ν)随频率ν增加而增大,最大值为24cm-1.样品2的吸收系数比样品1大得多,Co掺杂使晶格吸收带边向低频移动,而且样品2在1.9THz有吸收峰,吸收系数达到70cm-1,由此求出F--Co2+离子键伸缩振动的键力常数K为3.40×10-2N/cm.这一结果表明,THz光谱分析有可能成为研究晶体化学键的一种重要手段.利用光学常数之间的关系计算了两个样品在0.5—2.5THz的介电函数的实部ε1(ν),得到样品1的ε1(ν)值在4.67至4.73之间,样品2的ε1(ν)值在4.62至5.01之间.

 
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