采样

Single chip ; Power unit ; AC sampling ; Hardware synchronous sampling

单片机；发电机组；交流采样；硬件同步采样

That is to say,the cold resistance of these trees had raised by exercise in winter. The difference of the semilethal temperature of the trees at the beginning of Sept.2003 was slight(-5.03～-6.08℃).

试验结果表明，12 月底采样树种的半致死温度低于9 月初采样树种的半致死温度，即经过冬季一段时间的低温锻炼，植株的抗寒性有所增强。

That is to say, the cold resistance of these trees were close.But the difference of the semilethal temperature of the trees in the end of Dec.2003 was remarkable(-9.86～-13.48℃). The difference of the cold resistance of different tree species raised by exer-cise in winter.

月初采样树种的半致死温度相差不大(-5.03～-6.08℃)，即未经低温锻炼时，6个树种的抗寒能力相近；而12 月底采样树种的半致死温度相差较大(-9.86～-13.48℃)，即经低温锻炼后，6 个树种的抗寒性差距增大。

The key steps, such as particle initialization, prediction, sequential importance sampling, resampling, are particularly analyzed, and the validity and efficiency of the method are testified by simulation experiment.

着重分析了粒子初始化、预测、序贯重要性采样和重采样等关键步骤，并通过仿真实验分析验证了该方法的正确性和高效率。

Average monthly shell increment varied between seaward and shoreward sites at Shengung and Shigung, probably due to differences in related to tidal height, or a combination effect of submergence time and density of the clam.

彰化伸港与西港两地的不同潮汐采样区之公代族群，呈现不同的平均长度成长，这可能是因位於不同潮汐采样区的公代族群，其密度或摄食时间长短的不同所致。

According to the character of power system, this paper analyzes the digital spectral structure and representation of a sampled periodic signal and discusses the influence to the A.

但是，这种采样技术由于时基不准确，造成的各路A/D之间存在着不容忽视的延时误差，因此必然存在着非均匀采样现象。

Methods Random sampling method was used to collect samples twice from the spray-paint plants during the work time and 0.5 hour after work; the samples were sent to the laboratory and detected according to the national standard.

采取随机抽样方法，对每个喷漆车间工作时和停工后0.5h采样2次，采样4h内送实验室，按国家有关标准直接进样检测。

Firstly,the paper briefly presented the imaging system's aliasing effect as a result of subsampling and the theory of reducing aliasing effect by increasing sampling frequency.

文章简要地阐述了成像系统由于欠采样所带来的混叠效应，以及微扫描成像技术提高采样频率以减小混叠效应的原理，分析了微扫描工作模式和成像过程，然后介绍了几种典型光学微扫描器的实现方式。

And images processed with the incorrect parameters will be worsened. This paper analyses the effect of SNR on autofocus and proposes an adaptive filter in SAR azimuth subsampling to keep SNR as high as possible, so that the performance of autofocus can be improved and higher image quality achieved.

该文分析了信噪比对自聚焦的影响，提出利用自适应滤波器来做方位向预滤波和降采样，在降低采样率的同时，保持原始图像的信噪比，再经有效的自动聚焦算法，得到较准确的多普勒参数估计值，从而获取高分辨率SAR图像。

In global mode, annular omnidirectional images are captured by using skip subsampling mode to guarantee high frame rate, and then unwrapped to cylindrical panoramic images containing global scene information of 360 degrees. In local mode, the location and size of sampling window of image sensor are reconfigured according to the position of interested region, thereby only a corresponding rectangle region of omnidirectional images is captured by using pixel-by-pixel mode, and then unwrapped to a high- definition local perspective image of the corresponding view angle. Finally, a hardware design based on DSP+FPGA is presented.

在全局模式下，为保证采集帧速率，使用行列跳跃模式采集完整的环状全向图，并将其展开为包含360°全局信息的柱面全景图像；在局部模式下，根据感兴趣区域的空间位置设置采样窗口大小及位置，以逐像素采样模式只采集全向图中相应的一块矩形区域，并将其展开为对应视线方向上高清晰度的局部透视图；最后给出了DSP+FPGA结构的系统硬件设计方案。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。