Third, factor in all the known statistical variations of the material itself.
第三，把所有已知材料本身的统计变化因素计入。
Cotton material was not known in Europe until much later.
直到很久以后，欧洲才知道棉花布料。
Cotton material was not known in Europe until much later.
直到很晚之后，欧洲才知道棉花布料。
Thiourea powder is a known cancer causing material.
硫脲粉是已知的致癌物质。
This material is known as stover.
这种物质通常被用作柴火。
The amount of gummy material in gasoline is known as its gum content.
汽油中的胶状物量被称为其胶质含量。
The amount of gummy material in gasoline is known as its gum content.
汽油中的胶状物量被称为其胶质含量。
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