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合成了一个新的光致变色化合物水杨醛缩N(4)-甲基-氨基硫脲,用元素分析、IR、^1HNMR、紫外可见光谱等方法对化合物进行了表征及结构确证,并用对化合物的变色机理进行了探讨。 相似文献
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Exact thickness-shear resonance frequency of electroded piezoelectric crystal plates 总被引:2,自引:0,他引:2
INTRODUCTION In quartz crystal resonator design, the mass effec of the electrodes must be considered to achieve ac curate prediction of the fundamental thickness-shea frequency, as analyzed and demonstrated b Bleustein and Tiersten (1968), which is considered t be the exact frequency solutions in making necessar comparisons with solutions from two-dimensiona plate equations and deriving the correspondent cor rection factors (Mindlin, 1972). When the crysta plate is relatively thick or the… 相似文献
73.
描述了利用PC机与TMS320C5410核心的ZYE1810C系统为仿真平台。在CCS软件中,用C语言中直接引用汇编语言进行DSP编程,利用DSP的数据线信号来控制液晶显示屏的控制信号和数据传送,以实现对液晶显示屏的寄存器选择控制、读写控制等。 相似文献
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