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.

由集族的對稱差給出了集族存在唯一的相異代表系的一個必要條件 ,揭示了集族的對稱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.

集合的對稱差是集合的基本運算之一，它在測度論及其應(yīng)用中扮演著一個重要的角色。

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)不對稱公差標注與對稱公差標注間的轉(zhuǎn)換公式。

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

利用對稱公差標注時尺寸鏈的計算公式,進行工藝尺寸鏈計算。

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)計注射模時塑件公差采用基孔制與基軸制會導(dǎo)致成型零件不合格的問題,提出并驗證采用對稱公差解決問題的辦法,并用實例演示不同情況下塑件建模時為取得對稱公差的具體操作過程,對使用Pro/E軟件設(shè)計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)控圖像在時間和空間上的連續(xù)性和相關(guān)性,利用視頻圖像對稱差分,找到運動區(qū)域,再結(jié)合人臉膚色的聚類特征確定出人臉候選區(qū)域,改進了基于規(guī)則的人臉定位方法,利用人臉的幾何特征,實現(xiàn)復(fù)雜視頻圖像中的多人臉檢測。

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

利用對稱差分、膚色模型和幾何特征相結(jié)合可以快速實現(xiàn)視頻圖像中的人臉檢測,具體做法是:先利用圖像對稱差分方法得到運動區(qū)域,再用膚色檢測方法在運動區(qū)域中得到人臉候選區(qū)域,最后通過檢測眼睛位置,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空特性和左右通道間的視差特性,提出了一種結(jié)合對稱差分的變化檢測和秩空間立體匹配的立體視頻對象分割算法。

Background reconstruction algorithm based on symmetrical differencing;

基于對稱差分的背景重構(gòu)算法

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

基于動態(tài)閾值對稱差分和背景差法的運動對象檢測算法

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

基于減背景與對稱差分的運動目標檢測

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

對視頻運動對象分割算法進行了研究,該算法結(jié)合對稱差分和自適應(yīng)閾值選取,獲得變化檢測模板,并最終分割出視頻運動對象。

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 ,實現(xiàn)低碼率實時壓縮 ,提出一種快速的基于對稱差分的視頻分割算法 。

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

基于對稱差分算法的視頻運動目標分割研究

symmetrical heterostatic circuit

對稱異電位差連接電路

symmetrical (achromat)lens

對稱式(消色差)透鏡

Process Capability Index on Unilateral and Asymmetric Tolerance

單側(cè)公差及非對稱公差過程能力指數(shù)

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

試論親屬稱謂之“文化差異”——英、漢、維親屬稱謂對比

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

對稱雙混頻外差法測量相干光的相位差

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

鍵聯(lián)結(jié)中對稱度公差的選擇原則與誤差檢測

the error of route dissymmetry caused by backhaul is avoided;

避免了回程引起的路由不對稱誤差;

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

對稱正則長波（SRLW）方程的有限差分方法

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

對稱化L_2-偏差新的下界及其應(yīng)用

Asymmetric CARCH Effective Analysis of SZCI and SHCI Balance;

滬深股指差額非對稱的CARCH效應(yīng)分析

Asymmetric Information, Bank Reputation Diversity and Finance Regulation;

信息不對稱、銀行聲譽差異與金融規(guī)制

A Class of Process Capability Indices Based on Asymmetric Tolerances;

一類基于非對稱偏差的過程能力指數(shù)

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

拓展對稱與偏差數(shù)概念的形成及作用

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

全對稱微機械陀螺全差分檢測ASIC設(shè)計

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

用對稱分量法分析不對稱三相電路無功電能的測量誤差

Dynamic Hedging with Index Futures Considering Asymmetric Effect of Basis;

考慮基差影響非對稱效應(yīng)的股指期貨對沖策略

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

宇稱與手性──丙氨酸(纈氨酸)對映體宇稱破缺能差的實驗探索