The black stain problem in enamelled wires production is systematically discussed.

本文就漆包线成品黑斑问题进行了全面讨论。

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In 1873 the Italian scientist Camillo Golgi developed a black stain to highlight the micron-thin neural strands.

1873年，意大利科学家卡米洛·高尔基（Camillo Golgi）发明了一种黑色染料，可以对极细的神经索进行染色。

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The influence factors of the surface cleanliness of cold-rolled sheet are introduced and the reasons and composition of the post-annealing black stain and edge carbon are mainly analyzed.

对冷轧板表面清洁度的影响因素进行了综述，并重点探讨了退火黑斑和边缘碳的组成和成因。

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There is no narrative in the 1971 picture of the interior of an oven, just the white-speckled black enamel with a bit of food stain on the steel racks.

WSJ: A Challenge to the Pretty Ones | William Eggleston | At War With the Obvious | By William Meyers

They were, understandably, deeply offensive to black Americans and all others who regard segregation as a terrible stain on this Nation's history.

CENTERFORSECURITYPOLICY: Dustbin Durbin