查询词典 sampling

Firs t, we discuss the spatio-temporal structure of distributed signals, with an em phasis on the physics behind the signals and results on sampling.

首先，我们研究信号在时间和空间中的分布，了解信号的物理特性以及抽样采集的影响。

7 To 3.3 V operating supply voltage 44.1 kHz sampling frequency 16.9344 MHz (384fs) system clock Built-in crystal oscillator circuit 16-bit, MSB rst, rear-packed serial data input format ( 64 fs bit clock) 8-times oversampling digital lter · 32 dB stopband attenuation ·+0.05 to -0.05 dB passband ripple Deemphasis lter operation · 36 dB stopband attenuation ·-0.09 to +0.23 dB deviation from ideal deem- phasis lter characteristics Attenuator · 7-bit attenuator (128 steps) set by microcontrol- ler Soft mute function set by parallel setting ·(approximately 1024/fs total muting time) Mono setting · Left or right channel mono selectable by micro- controller Built-in innity-zero detection circuit , two-channel D/A converter · 3rd-order noise shaper · 32fs oversampling Built-in 3rd-order post-converter low-pass lters 24-pin VSOP package Molybdenum-gate CMOS process

2.7至3.3 V工作电源电压为44.1千赫的采样频率16.9344兆赫（384fs）系统时钟内置晶体振荡器电路的16位，MSB在前，后包装的串行数据输入格式（64飞秒位时钟）8倍超采样数字滤波器·32分贝的阻带衰减·+0.05至-0.05分贝通带纹波去加重滤波器的运作·36 dB抑制频宽衰减·-0.09到0.23 dB的偏差认为不理想，症状困扰评估滤波特性衰减器·7位衰减器（128级）集由单片机在-莱尔软静音功能的平行设置·（共约1024/fs静音时间）单声道设置·左或右声道单声道微控制器可选的内置的无限零检测电路Δ，两通道的D / A转换器·第三阶噪声整形·32fs过采样内置三阶后转换器的低通滤波器24引脚VSOP封装钼栅CMOS工艺

The sampling representativeness is made based on the individual deviation of phosphate rock by statistical method .

采用统计方法，针对原料磷矿个体差异，解决磷矿采样的代表性。

The instrument simultaneously sample for three phase voltage and current. Rotary photoelectric coding switch and LCD are used for human-computer interaction. it makes the interface compact and efficient. Utilizing the function of positive and negative edge trigger of the programmable counter array unit in MPU, signal zero-cross is captured for the phase detected based on double way. The software synchronism sampling method based on real-time parameter self-optimizing minishes period truncation error, and the measurement accuracy is improved. The digitization power measure imports traditional two-unit and three-unit methods and expands application range of the instrument. The capacity is discriminated by soft ware table-look-up on the load loss. The value of a quantity is converted to the value when reference temperature (75 ℃) from test temperature.

该仪器具有以下特点：仪器对三相电压电流同时采样；基于旋转式光电编码器和液晶显示屏的人机交互界面简洁而高效；可编程计数器阵列PCA"捕获"信号的过零点用于双向过零平均鉴相，得到准确的相位差和周期；基于实时参数自寻优的软件同步采样，有效地减小了周期截断误差，提高了测量准确度；数字化功率测量引入了传统的二表法和三表法，扩展了仪器的使用范围；实际容量根据负载损耗用软件查表的方法来判别；测量值已从试验温度折算到了参考温度(75℃)时的值。

Excellent agreement in PAH levels and distributions was found between pine needle and SPMD sampling, they serve as good biomarkers of organic compounds in the environment.

松针和SPMD对气态多环芳烃的监测具有很好的一致性，是进行区域大气污染评价的良好生物指示物。

The distribution of gas-solid two-phase flow in the axial guide vane cyclone tube was measured with five-orifice pitot tube and by means of isokinetic sampling method.

为研究颗粒分离机理，提高分离性能，采用五孔球探针测试仪及等动采样法对轴流导叶式旋风管内气固两相流速度与压力分布进行了测量，并分别对不同导流锥和排尘结构参数下的纯气流流场及颗粒浓度场分布进行了对比分析。

This paper formed a new method to get the wanted uniform design by computer sampling a number of experiment plan, counting their uniformities and choosing the best one of them as the last experiment plan.

这个试验设计方法，比使用均匀设计表来安排试验更简单直接，而且可以证明，其设计的试验点分布的均匀性，在抽样方案数足够多的情况下高于按均匀设计表来安排的试验。

Outside the data collection must also ensure that mobile stations and digital depth sounder in the same plane coordinates, so that collected in order to ensure that no deformation of the three-dimensional coordinates, while for the sampling interval is also necessary to keep pace.

在外也采集数据时一定要保证流动站和数字测深仪在同一平面坐标内，这样才能保证所采集的三维坐标不变形，同时对于采样间隔也一定要保持同步。

It describes the color characteristic of device accurately through constructing the geometric model and builds gamut mapping model in the section plane of gamut by dissecting. The improvement of image characteristic obtaining at real time satisfies the application and supports the adaptive gamut mapping. The sampling and visualization of sample set in different color space show the optic difference and give the error analysis of the color conversion between them. Based on the study of the color relation among the color spaces, the visualizing color can be created automatically with conversion formulas.

该工具在获取彩色输入／输出设备彩色特性的基础上，通过构建几何模型对设备色域进行了精确描述；利用对色域的剖分操作，构造基于剖面的色域匹配模型；通过改善图象彩色特性获取的实时性，使其能有效获取图象源的特征并满足色彩管理的应用需求，支持了自适应色域匹配；对不同色彩空间样本的采集和对比显示有效体现了色彩的视觉差别，并提供了它们之间转换的误差分析；在探究不同色彩空间的颜色对应关系的基础上，实现了可视化的真彩颜色的自动生成，使可视化颜色更加逼真。

Synchronous alternative sampling echnology in detail to improve the precision of the instrument and discuss some problem about the plication of this method .

文中论述了该电参数测量仪的工作原理，着重研究了提高测量精度的准同步采样算法，并讨论了该算法在单片机中应用的几个实际问题。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。