A balanced three-layer sample rotation pattern is presented in this paper to solve the problem of rotation for the quarterly surveys with three-stage sampling designs.
本文构造了一种平衡的三层次样本轮换模式,解决了三阶段抽样季度调查的三层次样本轮换问题。
Another balanced three-layer sample rotation pattern based on the former one given by the author is presented to solve the problem of rotation for quarterly surveys with three-stage sampling designs;and the new one has the same characteristics of keeping the sample match rates constant when any rotation is conducted as the former one.
针对采用三阶段抽样设计的季度调查,在此之前构造的一种平衡三层次样本轮换模式的基础上,构造了另外一种平衡的三层次样本轮换模式。
In the proposed method,wavelet transform is combined with modal transform,and transient traveling-wave signal is used.
通过将小波变换与模式变换理论相结合,提出了一种电力电缆故障的在线测距方法,该方法采用暂态行波信号,首先将三相信号转换成模式分量,零模分量的小波变换系数用于判别故障的大致位置,然后利用线模分量的小波变换系数来确定行波到达时间。
Based on the geometrical optics and vector diffraction theory,mode converter is studied the output mode of which is converted to line polarization Gauss beam of gyrotron and high power microwave device,the radiation characteristic of quasi-optical mode conversion is simulated.
基于几何光学理论和矢量绕射理论,研究了将回旋管及其它高功率微波器件的振荡输出模式转换成线极化准光高斯波束的模式变换器,模拟出了准光模式变换的辐射特性,采用V lasov辐射器和准光反射面实现了线极化准高斯模HE11横向输出方式。
The formulas of mode conversion are given semi-analytically.
研究了非线性弱导椭圆梯度折射率光纤中光束的模式变换 ,给出了模式变换的半解析公式。
On the basis of mode conversion theory, this paper further optimized a better dimension and obtained the regulation about the radius of the circular waveguides, curvature and frequency of bent circular waveguides and the bandwidth.
在数值研究高功率毫米波 TM0 1—TE11光滑弯曲圆波导模式变换的基础上 ,对弯曲波导的几何结构进行了优化分析。
Then schema comparison, schema transformation, schema unification and confl ict resolution were performed to get a global schema according to which queries c an be submitted.
提出一种异构 DTD的转换和集成方法 ,将 DTD转化为 IDMX模型的表示 ,然后通过模式比较、模式变换、模式合并与冲突消解的过程得到全局模式以及全局模式到局部模式的映射 。
A Balanced Three-Layer Sample Rotation Pattern for Quarterly Surveys;
季度调查的一种平衡三层次样本轮换模式
A balanced two-layer Yotation pattern for montly survey;
月度调查的另一种平衡的两层次样本轮换模式
An Alternative Balanced Three-Layer Sample Rotation Pattern for Quarterly Surveys;
季度调查的另一种平衡三层次样本轮换模式
On the Rotation of Physical Education Teaching Pattern in Colleges and Universities;
试论高校公共体育课的“轮换教学”模式
A Consideration of the Turns-Taking Teaching Mode in Ideology and Ethics Coarse;
“轮换式”思想道德修养课教学模式的思考
Study on optional section teaching approach designed for university physical education;
大学体育课选项制分段轮换教学模式初探
Brief analysis on the rotatory teaching modes of "minifying gym lessons"
高职院校“小型化体育课”轮换教学模式初探
Drawing capstans are arranged in straight-line, the metering capstan is driven by separate DC motor. Drawing dies can be quickly changed.
鼓轮直线式排列，定速轮单独直流电机驱动，可实现快速换模功能。
FS Switch to full screen mode. /WM Switch to window mode.
FS切换到全屏模式./WM切换到窗口模式.
Analysis and calculation of cam templates interchangeability in camshaft grinder
凸轮轴磨床凸轮靠模互换的分析与计算
contactless instrument of instantaneous profile transformation
轮廓瞬即转换的非接触式仪器
contactless instrument of consecutive profile transformation
轮廓顺序转换的非接触式仪器
contact instrument of instantaneous profile transformation
轮廓瞬即转换的接触式仪器
contact instrument of consecutive transformation of profile
轮廓顺序转换的接触式仪器
Design of an Automatic Dividing Punch Mould for Spokes on Wheel Cranes
轮式起重机轮辐自动分度冲孔模设计
Check the tire manufacturer's recommendations - different tires have different rotation patterns.
查询轮胎生产厂家说明介绍，不同类型的轮胎有不同的轮换方式。
A novel integral handle reversal valve of wheel loader
一种轮式装载机整体式新型手动换向阀
counting type ad converter
计数方式模数变换器