During the long storage of black-and-white photographs ,their image may undergo slowly significant modifications ,i.
黑白照片的影像,在长久保存期间,受外界的有害气体、空气、湿气、光和热的作用,会逐渐发生变化:变黄、变棕甚至褪色。
There are large number of fading, mildewing, turning yellow black-and-white photographs in museums and archives, which seriously influence the value of image preservation and historical signification.
然而收藏在博物馆和档案馆的早期黑白照片大多出现了影像消褪、变黄、霉变等现象,严重影响了照片档案的保存价值和历史研究价值。
This paper mainly studies how to distinguish old black and white photographs and chromophotographs that in human vision,and presents an algorithm to classify them.
本文主要研究如何区分人类视觉中的黑白老照片和彩色照片,并提出了一种对两者分类的方法。
the world looks like a black-and-white photo.
世界就像一张黑白照片。
a monochrome photograph, print, drawing, etc
黑白照片、 印刷品、 图画等
In my memory, Beijing was like a black-and-white photograph.
在我的记忆中，北京就像一张黑白照片，
Black-and-white photos feature tradition while color signifies modernity.
黑白照片具有传统特色，而彩色照片则具有现代气息。
Someone ventures with great conviction that black-and-white photographs appeal only to the Westernized.
一位同事断言只有洋化的人才会喜欢黑白照片。
Research on Revivification and Consolidation of Fading, Mildewing Black-and-white Photograph;
模糊、淡化、霉变黑白照片显现加固剂的研究
The album includes150 original black-and-white pictures, many of them press photographs.
相册中有150张原版的黑白照片，其中许多都是新闻图片。
The Photographic Section produced 80 217 monochrome photographs and 945 486 colour prints and slides in 1997.
在一九九七年，摄影组人员摄制了80217张黑白照片、945486张彩色照片及幻灯片。
The poster even makes an explanation that this is NOT a black-and-white picture.
为此，电影海报还做了解释，说他们没有使用黑白照片。
But previously, the black-and-white photographs always showed the city before liberation in1949.
但此前，总是用黑白照片来显示1949年解放前的状况。
Ripple points to some black-and-white photographs taken of the same spot in the Lamar Valley more than50 years apart.
瑞波指著一些黑白照片，它们是在拉马河谷同一地点拍摄的景观，拍摄时间距今50年以上。
Spread over half a century, his beautiful black-and-white pictures show a country still bleeding from the rift between poor and rich.
在流传了半个世纪后，他那些美丽的黑白照片中的祖国，仍然因贫富差距而流血不止。
a black-and-white photograph or slide.
一种只有黑白两色的照片或幻灯片。
Black & White film is good for portraits.
黑白底片照肖像效果很好。
black-and-white negative stock
黑白底片,黑白负片
Determination of ISO speed of black-and-white pictorial still camera negative film/process systems
GB/T2923-1995黑白照相负片/加工组合ISO感光度的测定
Black-and-white exposure
黑白片曝光(摄影)
(photography) black-and-white film.
（摄影学）“黑白胶片”。