这种变形实际上是由玻璃制造商工艺的特殊性造成的。

The distortion is actually thanks to a peculiarity of the glassmaker's process.

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8家不同的玻璃制造商收到了产品要求。

A product request was sent to eight different glass makers.

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直到16世纪，彩色玻璃都是在玻璃制造过程中着色的。

Up until the 16th century, stained glass was colored during the glass making process itself.

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So, practitioners who understood what we would know to be chemistry were highly valued in that society. And then, you may expand it to other chemical processes, dyeing of cloth, glassmaking, and metals extraction.

所以，理解我们所知为化学的,先行者们，在那个社会是,非常宝贵的，当时，你可能将其扩展到另一个化学过程，如布料的染色，玻璃的制造，还有金属提取。

麻省理工公开课 - 固态化学导论课程节选