This paper gives a necessary condition for only a system of distinct representaives existed in sets by sets symmetric difference,revealing the relation between the symmetric difference and the system of distinct representatives of sets.

由集族的對(duì)稱(chēng)差給出了集族存在唯一的相異代表系的一個(gè)必要條件 ,揭示了集族的對(duì)稱(chēng)差與相異代表系之間的關(guān)

The symmetric difference of the sets is one of the basic operation of the sets, and it plaies an important role in measure theory and its applications.

集合的對(duì)稱(chēng)差是集合的基本運(yùn)算之一，它在測(cè)度論及其應(yīng)用中扮演著一個(gè)重要的角色。

The transfer formula between asymmetric tolerance marking and symmetric tolerance marking is deduced by the mathematical method.

利用數(shù)學(xué)方法,推導(dǎo)不對(duì)稱(chēng)公差標(biāo)注與對(duì)稱(chēng)公差標(biāo)注間的轉(zhuǎn)換公式。

The process dimension chain is calculated by the dimension chain calculating formula of symmetric tolerance marking.

利用對(duì)稱(chēng)公差標(biāo)注時(shí)尺寸鏈的計(jì)算公式,進(jìn)行工藝尺寸鏈計(jì)算。

A method was put forward and examined in which symmetric tolerance was applied to solve the problem.

分析使用Pro/E軟件設(shè)計(jì)注射模時(shí)塑件公差采用基孔制與基軸制會(huì)導(dǎo)致成型零件不合格的問(wèn)題,提出并驗(yàn)證采用對(duì)稱(chēng)公差解決問(wèn)題的辦法,并用實(shí)例演示不同情況下塑件建模時(shí)為取得對(duì)稱(chēng)公差的具體操作過(guò)程,對(duì)使用Pro/E軟件設(shè)計(jì)注射模的成型零件具有重要作用。

Based on the continuity and relativity in time and space of video surveillance sequences,similar face areas were found in motion areas using symmetrical frame differences of video sequences and the clustering of skin-color features.

根據(jù)視頻監(jiān)控圖像在時(shí)間和空間上的連續(xù)性和相關(guān)性,利用視頻圖像對(duì)稱(chēng)差分,找到運(yùn)動(dòng)區(qū)域,再結(jié)合人臉膚色的聚類(lèi)特征確定出人臉候選區(qū)域,改進(jìn)了基于規(guī)則的人臉定位方法,利用人臉的幾何特征,實(shí)現(xiàn)復(fù)雜視頻圖像中的多人臉檢測(cè)。

A human face detection method based on symmetrical frame difference,skin-color model and geometry feature is fast.

利用對(duì)稱(chēng)差分、膚色模型和幾何特征相結(jié)合可以快速實(shí)現(xiàn)視頻圖像中的人臉檢測(cè),具體做法是:先利用圖像對(duì)稱(chēng)差分方法得到運(yùn)動(dòng)區(qū)域,再用膚色檢測(cè)方法在運(yùn)動(dòng)區(qū)域中得到人臉候選區(qū)域,最后通過(guò)檢測(cè)眼睛位置,利用人臉幾何特征精確定位人臉。

With symmetrical frame difference mechanism,moving objects in middle frame can be quickly detected.

本文基于立體視頻序列的時(shí)空特性和左右通道間的視差特性,提出了一種結(jié)合對(duì)稱(chēng)差分的變化檢測(cè)和秩空間立體匹配的立體視頻對(duì)象分割算法。

Background reconstruction algorithm based on symmetrical differencing;

基于對(duì)稱(chēng)差分的背景重構(gòu)算法

New algorithm for detecting moving object based on adaptive background subtraction and symmetrical differencing;

基于動(dòng)態(tài)閾值對(duì)稱(chēng)差分和背景差法的運(yùn)動(dòng)對(duì)象檢測(cè)算法

Moving objects detection algorithm based on background subtraction and symmetrical differencing;

基于減背景與對(duì)稱(chēng)差分的運(yùn)動(dòng)目標(biāo)檢測(cè)

The algorithm combines symmetrical DFD and adaptive thresholding approach to get CMD,and finally segment the moving object.

對(duì)視頻運(yùn)動(dòng)對(duì)象分割算法進(jìn)行了研究,該算法結(jié)合對(duì)稱(chēng)差分和自適應(yīng)閾值選取,獲得變化檢測(cè)模板,并最終分割出視頻運(yùn)動(dòng)對(duì)象。

In order to make highly effective segmentation and realize real time and low rate video coding, we propose a rapid video segmentation algorithm based on symmetrical DFD.

基于 MPEG- 4的圖像壓縮編碼 ,為了高效率分割 ,實(shí)現(xiàn)低碼率實(shí)時(shí)壓縮 ,提出一種快速的基于對(duì)稱(chēng)差分的視頻分割算法 。

Studies on Moving Object Segmentation Based on Symmetrical Differencing Algorithm in Video Sequences;

基于對(duì)稱(chēng)差分算法的視頻運(yùn)動(dòng)目標(biāo)分割研究

symmetrical heterostatic circuit

對(duì)稱(chēng)異電位差連接電路

symmetrical (achromat)lens

對(duì)稱(chēng)式(消色差)透鏡

Process Capability Index on Unilateral and Asymmetric Tolerance

單側(cè)公差及非對(duì)稱(chēng)公差過(guò)程能力指數(shù)

On "The Cultural Differences" of Kinship Terms:The Comparison of Chinese,English and Uygur Aspects;

試論親屬稱(chēng)謂之“文化差異”——英、漢、維親屬稱(chēng)謂對(duì)比

The Balanced Dual-mixer Heterodyne for Measurement of Phase Difference between two Coherent Lights;

對(duì)稱(chēng)雙混頻外差法測(cè)量相干光的相位差

The principle of choice and deviation measurement of symmetry tolerance in key coupling

鍵聯(lián)結(jié)中對(duì)稱(chēng)度公差的選擇原則與誤差檢測(cè)

the error of route dissymmetry caused by backhaul is avoided;

避免了回程引起的路由不對(duì)稱(chēng)誤差;

Research on Finite Difference Solutions for Symmetric Regularized Long-wave Equation;

對(duì)稱(chēng)正則長(zhǎng)波（SRLW）方程的有限差分方法

New Lower Bounds for the Symmetric L_2-discrepancy and Their Application;

對(duì)稱(chēng)化L_2-偏差新的下界及其應(yīng)用

Asymmetric CARCH Effective Analysis of SZCI and SHCI Balance;

滬深股指差額非對(duì)稱(chēng)的CARCH效應(yīng)分析

Asymmetric Information, Bank Reputation Diversity and Finance Regulation;

信息不對(duì)稱(chēng)、銀行聲譽(yù)差異與金融規(guī)制

A Class of Process Capability Indices Based on Asymmetric Tolerances;

一類(lèi)基于非對(duì)稱(chēng)偏差的過(guò)程能力指數(shù)

The Formation and Function of Two Concepts of Extended Symmetry and Deviation Number;

拓展對(duì)稱(chēng)與偏差數(shù)概念的形成及作用

Design of Full Differential Detection ASIC for Full Symmetrical Micro Mechanical Gyroscope

全對(duì)稱(chēng)微機(jī)械陀螺全差分檢測(cè)ASIC設(shè)計(jì)

To Analyze the Reactive power Measure Error of Non-balance Three-phase Circuit with Balance-Phasor Method;

用對(duì)稱(chēng)分量法分析不對(duì)稱(chēng)三相電路無(wú)功電能的測(cè)量誤差

Dynamic Hedging with Index Futures Considering Asymmetric Effect of Basis;

考慮基差影響非對(duì)稱(chēng)效應(yīng)的股指期貨對(duì)沖策略

From Parity to Chirality-Experimental Search for Parity-viola-ting Energy Difference of Alanine and Valine Enantiomers

宇稱(chēng)與手性──丙氨酸(纈氨酸)對(duì)映體宇稱(chēng)破缺能差的實(shí)驗(yàn)探索