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不定方程3x-1=2y的正整数解为(1,1),(2,3);3x+1=2y的正整数解为(1,2). 相似文献
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基于单片机的无线遥控系统设计 总被引:1,自引:0,他引:1
设计了一种基于单片机AT89C51和无线传输模块FSK_2A构成的多路控制应用系统,论述其工作原理和软硬件设计方法。本设计是以AT89C51单片机为核心,采用315M的发射接收模块来实现多路无线控制,结构简单,电路稳定可靠,抗干扰能力强,有很大的实际应用价值。 相似文献
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Human expression rapid reconstruction has many potential applications in entertainment and social security. In this work, a rapid human expression measurement system based on a digital fringe projection and phase-shift technique is developed. The measurement system consists of a digital light processing (DLP) projector and a high-speed change-coupled device (CCD) camera. The DLP projector is used to project computer-generated fringe patterns onto the human face, and the high-speed CCD camera synchronized with the projector acquires the fringe images at a frame rate of 30 frames/s. Based on a three-step phase-shifting method and an accurate phase-height mapping algorithm, each frame of the 3-D human expression can be reconstructed. The principle of the proposed method is described and some experimental results are presented to demonstrate its performance. The experiment results show that the measurement system can reconstruct accurate 3-D human expression. An obvious merit of this method is that it can reconstruct the 3-D human expression in a very short time and it is not sensitive to the movement of the face during the measurement processing. 相似文献
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对3种具有水质净化功能的地衣芽孢杆菌、假丝酵母菌和荚膜红假单胞菌进行混合培养,探讨3种菌混合培养的培养基、培养条件及其生长关系.实验结果表明,3种菌均可良好生长的培养基为每升水含葡萄糖10g,酵母膏10 g,蛋白胨6 g,NaCl220 g,MgSO40.2 g,KH2PO40.5 g,K2HPO40.3 g,pH6.5;3种菌混合培养的接种顺序与培养条件为在培养液中先分别接种3%荚膜红假单胞菌与假丝酵母菌,于35℃、200 r/min摇床下培养48 h,后接种4%地衣芽孢杆菌继续混合培养至60 h;3种菌混合培养时的生长关系为假丝酵母菌与荚膜红假单胞菌存在互惠互利关系,而地衣芽孢杆菌与其它两株功能菌为无关共栖关系. 相似文献
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不定方程3x±1=2y的正整数解 总被引:1,自引:0,他引:1
不定方程3x-1=2y的正整数解为(1,1),(2,3);3x+1=2y的正整数解为(1,2). 相似文献
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