The original white lead pigments have oxidized and turned black.
原来白色的铅颜料已经氧化发黑了。
You can see why this type of analysis requires a knowledge of the history of pigments, right?
你能明白为什么这种分析需要了解颜料的历史了，对吧？
You'd have to know what pigments he used, in other words, what ingredients he used to make different colors of paint, because the ingredients used in paints and binding agents have changed over time.
你要知道他使用了什么颜料，换句话说，他用了什么原料来制造不同颜色的油漆，因为油漆中使用的原料和结合剂都随着时间的推移而改变。
You've got to find out what's in those pigments, learn their composition, and that requires lab work—detective work really—in a word, Spectroscopy.
你必须找出那些颜料里有什么，了解它们的组成，这需要实验室的工作——真正的探测性工作——也就是光谱学。
The Romans used natural pigments on their fabrics and walls.
罗马人使用天然颜料染布和刷墙。
Various pigments, inks and paper treatments will respond differently to some wavelengths of light.
不同的颜料、油墨和纸张处理对不同波长的光会有不同的反应。
The Impressionists created violet by glazing cobalt blue or ultramarine with red, or by using new cobalt and manganese violet pigments that had become available to artists.
印象派画家通过在钴蓝色或群青色上涂一层红色来得到紫色，或者直接使用当时已经开始生产的紫色钴锰颜料。
Ideally, knowing, say, what sort of resin Mark Rothko used or which pigments are in a medieval manuscript can help determine the best ways to preserve the objects.
理论上说，知道马克·罗斯科（油画家）使用哪种松脂或中世纪一份手手稿上是哪类颜料，都有助于找出保存这些作品的最佳方法。
The pigments used come from non-transparent minerals and plants such as malachite and cinnabar.
使用的颜料来自于不透明矿物和植被，如孔雀石和朱砂。
Most people use previously, to the 18th century, pigments that were produced from earth.
直到18世纪，大多数人所用的颜料都是由天然物质制成的。
The disease can also occur in those who work around “dry-cell batteries, anti-knock gasoline additives, pesticides, pigments, dyes, inks and incendiary devices.
这种疾病还能发生在另一些人身上，那些人在工作中，常常接触“干电池，抗爆汽油添加剂，农药，颜料，燃料，油墨和燃烧装置”。
They helped create new drugs, brighter pigments and improved booze distillation.
他们帮助制造新的药物，更好的颜料和改进酒精蒸馏法。
In some cases - such as when a person with permanent eyeliner has an MRI of the eye - tattoo pigments may interfere with the quality of the image.
在一些案例中，当纹过眼线的患者在做眼部的MRI时，纹眼线的颜料可能会干扰最后的成像效果。
Though Hoechst, once the local chemical giant, was absorbed into sanofi-aventis of France in 1999, its Frankfurt site still churns out polymers, pigments and pharmaceuticals.
虽然赫斯特公司在1999年被法国的赛诺菲-安万特公司收购，但它的法兰克福工厂还在批量地生产出化学聚合物，颜料和药物相关的产品。
Unlike paint or ink or most other things that produce colors, butterfly wings have no pigments.
油漆和油墨以及其他很多物质都能制作出色彩，而蝴蝶的翅膀与它们不同，它没有这种颜料。
"Living pigments" is a metaphorical device to refer to the fact that the pigments of the original paint have been replaced by pigmented micro-organisms.
“活颜料”是个比喻，意味着绘制岩画最初使用的颜料已被画作表面微生物取代。
Individual phytoplankton are tiny, but when they bloom by the billions, the high concentrations of chlorophyll and other light-catching pigments change the way the surface reflects light.
单个的浮游植物是渺小的，但是当它们爆发成数十亿规模的水华后，高浓度的叶绿素以及其他采光颜料改变了表面反射光线的方式。
Make sure the tattoo artist removes a needle and tubes from sealed packages before your procedure begins. Any pigments, trays and containers should be unused as well.
确保每次纹身前您的纹身师都替换上了新开封针头和针管，不论是颜料、置物盘还是盘内的工具用料都应该是全新的。
A tattoo is a permanent mark or design made on your skin with pigments inserted through pricks into the skin's top layer.
纹身其实就是用带有颜料的针刺工具在皮肤的表皮层留下的永久记号或图案。
He is wearing plastic gloves to protect himself from the toxic chemicals in the paint; some painters prefer the old, poisonous solvents and pigments to the new healthier materials.
他戴着塑胶手套以防止颜料里的有害物质；一些画家会宁可选择旧的有毒溶剂而不是新的更安全的材料。
Because they can be tuned across the whole spectrum they might provide a safe and environmentally friendly replacement for pigments in paint.
因为它们可以协调整个频谱，可提供一种安全且环保涂料替代颜料。
Load or feed rubber, pigments, filler, oil and chemicals into machines.
加载或填补橡胶，颜料，填料，石油和化学物质进入机器。
When the painters further collage pigments in the same way as the objects are collaged, abstract painting comes into being.
当画家们进一步按照拼贴物体的方法在画面上拼贴颜料的时候，抽象绘画就产生了。
The risks of receiving an infection from unsanitary tattooing equipment or irritating an allergy with tattoo pigments, although uncommon, are real.
不卫生的纹身器械或因纹身颜料引起的过敏症的风险，虽不普遍，但它是真实的存在。
Across the lower sky were faint peach and lavender brush strokes, as if some celestial painter were experimenting and not quite sure which pigments to choose.
模糊的桃色与淡紫色刷状般的一抹横跨低矮的天空，就好像天上的画师在试着为天空着色，却不确定选择哪种颜料。
What are the primary colours of pigments and paints?
颜料和油漆的三基色是什么？
All kinds of pigments of muddy type and highly pasted type under 100 mesh, muddy type materials, soda detergent, alkali starch, dyestuff pigment, clay grey clay and cement, etc.
泥浆状高糊状100目以下物料各种颜料、泥头状物科滤并离心机滤并纯碱冼涤剂、碱石淀粉、染料颜料、粘土灰等粘土等水泥等。
L 'oreal Paris optimal compatibility selected components in the selection of natural ingredients from nature and mineral pigments.
精选成分优化兼容性巴黎欧莱雅从大自然中精选天然成分和矿物质颜料。
L 'oreal Paris optimal compatibility selected components in the selection of natural ingredients from nature and mineral pigments.
精选成分优化兼容性巴黎欧莱雅从大自然中精选天然成分和矿物质颜料。
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