sampling ratio的例句大全

This paper expatiates on the sampling test method of NDT on welds, discussing the sampling positions and ratio through welding procedures and welding condition analysis, which is of referential value to testers and QC personnel.

为此，对焊缝无损探伤抽查法作了较为详细的说明和分析，特别是从焊接工艺、施焊条件分析方面对抽查部位、抽查比例进行探讨，对检查人员和质量管理人员来说都具有参考价值。

Based on some reasonable hypothesizes, the factors influencing the detection probability were deduced, including the target size, the size of the sampling node which contains the target, the signal-noise ratio of the input image and the uniformity of the target.

在一定的假设条件下，从理论上推导出了模型中影响小目标预检测概率的各个因素，包括目标大小、目标所在采样节点的大小、输入图像信噪比和目标均匀性参数等。

Methods A total of 198 nurses using stratified random sampling in proportion to the ratio of different levels of the nurses. A questionnaire with approved validity was used in the survey, and the results were statistically analyzed.

方法参考TQC的相关知识，自行设计问卷，采用按护士层次比例分层随机抽样的方法抽取198位护士，采用统一发放、集中收回的调查方式。

Because of the capacitance bottom plate sampling and fully differential structure, the charge injection effect of switched-MOSFET and the clock feed-through effect induced signal error are eliminated. The linearity, signal to noise ratio ( SNR) and conversion-speed of the ADC are improved.

由于采用了电容下极板采样和全差分结构，能够有效地消除开关管的电荷注入效应和时钟馈通效应引起的采样信号的误差，提高模数转换器的线型度、信噪比和转换速度。

Sampling was conducted with the method of contiguous grid quadrate, Dispersion Index ( v/ m ratio) was taken as the index of aggregation intensity, and the simulation tests for Poisson and Negative binomial distribution were performed.

采用邻接格子样方法取样，运用扩散系数作为聚集强度的测度指标，并进行泊阿松分布和负二项分布的Χ2拟合检验；

In the simulation, constellation, Bit-Error-Rate ( BER) and Signal-to-Noise Ratio ( SNR) performance degradation are analyzed taking into account the effect of sampling frequency offset.

经过仿真，从星座图、误码率（Bit-Error-Rate，BER）及信噪比（Signal-to-Noise Ratio，SNR）损失等角度对采样频率偏差的影响做了揭示和验证。

the results were as fellows: ( 1) the detection ratio of hchs and ddts from each sampling station was 100% and 60%, respectively.

结果表明：（1）各河流监测点HCHs检出率为100%，DDTs检出率为60%。

sampling matrix inversion beamforming technique(smi) has the worse performance in the small snapshot number and high signal-noise-ratio.

采样协方差矩阵求逆（SMI）的波束形成方法在少快拍数、高信噪比情况下波束形成性能下降。

sampling rate conversion methods of integral ratio, fractional ratio, and nco controlled positive real ratio are investigated.

文中分析了整数倍、分数倍和NCO控制的正实数倍的采样率变换方法。

in the safeguards environmental sampling, analyzing isotopic ratio of single uranium-bearing particle in swipe samples was very important.

在核保障环境取样分析中，对含铀单微粒进行元素和同位素分析是十分重要的。

Related detection must guarantee signal synchronization sampling, and get the biggest signal noise ratio.

相关检测要保证信号同步采样, 可以得到最大信噪比.

Methods An equal-sized stratified multi-stage randomly sampling design was applied to obtain three provincially representative sample groups consisted of 720 Guangdong residents each, aged at 12,35-44 and 65-74 years old respectively, with a gender ratio of half to half.

方法采用多阶段分层等容量随机抽样的方法，抽取广东省12岁、35~44岁、65~74岁城乡常住人口各720人，男女各半。