1)  CNR
对比度噪声比
1.
Objective Study on the relationship of Propeller technology and image quality such as signal-to-noise ratio(SNR),contrast-to-noise ratio(CNR) and artifact.
目的对磁共振的螺旋桨技术就图像信噪比、对比度噪声比、伪影等图像质量要素进行相关性研究。
2)  comparison
对比
1.
Performance Comparison between Assel Pipe Mill and Accu-Roll Pipe Mill;
浅谈Assel轧管机与Accu Roll轧管机的性能对比
2.
Models of the Finite Element Analysis of Tube Sheets and Their Comparison;
管板有限元分析模型与对比
3.
Performance comparison between UHMW-PE and TPU;
超高分子量聚乙烯与聚氨酯弹性体的性能对比
3)  contrast
对比
1.
Contrast of Silk Produce among China,Japan and South Korea;
中日韩丝绸业生产发展对比
2.
Analyzing and Contrasting the Environmental Quality Written Report of Fujian Province with the Written Report of Chongsheng Country in Japan;
日本冲绳县与福建省环境质量报告书对比分析
4)  compare
对比
1.
In this paper introduced the application condition of alcohol in many countries such as America, Brazil, EU, and China, and compared and analyzed the extent of application, and standard of fuel alcohol at home and abroad.
介绍了美国、巴西、欧共体等世界主要燃料乙醇应用国家及中国的燃料乙醇使用情况,对比分析了国内外燃料乙醇的应用程度和国家标准,从能源危机与环境保护的角度出发,展望了燃料乙醇工业的发展前景。
2.
By experiment of MAG welding to Q235-A,Q345A steel,it compares the seam metal conponent and mechnical properties.
对Q235-A、Q345A钢进行MAG焊工艺试验,从焊缝金属成分及力学性能进行比较,在工艺试验基础上在装载机驾驶室上进行MAG焊尝试并从工艺性能、力学性能、成本进行对比,进一步说明推广MAG焊具有十分广阔的应用前景。
5)  correlation
对比
1.
Application of wavelet transform in correlation in synthetic seismogram and seismic traces nearby borehole;
小波变换在合成道与井旁道对比中的应用
2.
Cutting logging correlation between Sudan 1/2/4 block and Jilin oilfield.;
苏丹1/2/4区块与吉林油田岩屑录井对比
3.
Primary Discussion on the Cretaceous Division and Correlation of Well KC_1;
克参1井白垩系划分对比的初步探讨
6)  comparative
对比
1.
Comparative Study on Trace Elements in Elsholtzia bodineri Vaniot. from Honghe by FAAS;
红河州不同地区野山茶中微量元素的对比研究
2.
Comparative Study on English Teacher Education Model of Kindergartens;
幼儿园英语教师培养模式对比研究
3.
WT5”BZ]The comparative experimental study on the single detonation wave of an ethyne air mixture under various conditions was made.
选取爆震室的三种不同工作状态 ,采用乙炔与空气混合气对单次爆震波进行了对比实验研究 ,研究了爆震室的封闭程度对爆震波产生的影响规律 ,发现在爆震室完全封闭状态下 ,能产生充分发展的爆震波 ;爆震室一端封闭、另一端敞口状态下爆震强度明显下
参考词条
补充资料:对比度


对比度


  影像学术语。照片的模拟影像上相邻两点间的光学密度(D1、D2)之差。其值等于照片上相邻两点透光强度(I1、I2)之比的对数值。胶片对比度为一综合性概念,包括胶片固有对比度和影像对比度。前者与胶片性能、曝光条件和暗室操作等有关,存在于各种成像方式中;后者则主要与成像技术有关。不同成像技术所摄之照片的影像对比度的内涵不同。如传统X线照片的对比度反映人体组织对X线的衰减特性;超声照片对比度反映组织的声学特性;MRI则反映组织内氢核弛豫时间(T1,T2)和质子密度的差异。对比度可以累积,如医用X线胶片由双面乳剂层组成,所观察到的对比度是单面乳剂层对比度的两倍。影像的模糊度、噪声和失真等因素可致对比度下降。对比度又称照片对比度(contrast gradient of film)、光学对比度(optical contrast gradient)或物理对比度(physic contrast gradient)。
  
说明:补充资料仅用于学习参考,请勿用于其它任何用途。