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。
The lead pigments are a big source of lead pollution.
含铅颜料是主要的铅污染源。
Glaze is mostly translucent, but da Vinci would also slip in small amounts of pigments, such as manganese and lead oxides.
釉料大多是半透明的，但达芬奇也会添加少量色素，如锰，氧化铅。
Yet the alchemists had their triumphs, inventing brilliant new pigments, perfecting the old - red lead oxide, yellow arsenic sulfide, a little copper and vinegar and you've got bright green verdigris.
尽管如此，炼金术士还是获得了许多成就，他们创造了色彩鲜艳的天然色素，使原来的色素更完美——红色的氧化铅，黄色的硫化砷，少许铜加上醋，你就会得到明亮的绿色的铜绿。
Proper selection of the resin, pigments and fillers and additives, Especially, a special additive T and formulation lead to the average reflectance ratio is up to 80.
通过所用树脂、颜填料和助剂的选择和搭配，尤其针对本研究体系的特殊性，采用了一种特种助剂T，使研制的涂层在可见-近红外波段的反射比达到80。
Proper selection of the resin, pigments and fillers and additives, Especially, a special additive T and formulation lead to the average reflectance ratio is up to 80.
通过所用树脂、颜填料和助剂的选择和搭配，尤其针对本研究体系的特殊性，采用了一种特种助剂T，使研制的涂层在可见-近红外波段的反射比达到80。
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