Each usually comes with a diagram, marking the position of the tiny specks of carbon that can be seen when viewed through a "loupe", the jeweller's 10x magnification tool.
每张通行证通常会配有一张图表，记录着钻石上微小的碳质瑕疵的位置，通过珠宝商特制的一种10x倍率的“放大镜”能看到这些瑕疵。
Researchers in California, Oregon and Washington noticed specks of sulfur compounds, carbon and other byproducts of coal combustion coating the silvery surfaces of their mountaintop detectors.
研究人员在加里福尼亚、俄勒冈、华盛顿发现硫化物、碳及其他燃烧副产品在其山顶的银色探测器上留下了斑点。
Researchers in California, Oregon and Washington noticed specks of sulfur compounds, carbon and other byproducts of coal combustion coating the silvery surfaces of their mountaintop detectors.
研究人员在加里福尼亚、俄勒冈、华盛顿发现硫化物、碳及其他燃烧副产品在其山顶的银色探测器上留下了斑点。
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