Boots worn by University of South Florida graduate student Katie Brusché are stained with yellow-brown tar from the Gulf oil spill, as seen under ultraviolet light in a long-exposure photograph.
南佛罗里达大学研究生 Katie Brusché 穿着的一双靴子。
Under UV light, tar from the Gulf of Mexico oil spill lights up orange-yellow on the beaches of Gulf Islands National Seashore (picture) while clean sand glows purple in a long-exposure picture.
长曝光拍摄的图片中，大片的油污在紫外线下发出橙黄色的光，干净的沙子为紫色。这是海湾岛国家海滨沙滩上的情景。
Medium with worse lubricating property, such as light fuel oil, heavy fuel oil, coal tar, asphalt, viscose, emulsified mixture, etc.
润滑性较差的介质，如轻质燃油、重质燃油、煤焦油、沥青、粘胶液、乳化液等；
The technology is used for conversion from hydrofining coke-oven gas into the oil, conversion from coal tar into the oil and light benzole hydrorefining.
该技术使用于焦炉煤气转化油、煤焦油转化油、轻苯加氢精制。
The technology is used for conversion from hydrofining coke-oven gas into the oil, conversion from coal tar into the oil and light benzole hydrorefining.
该技术使用于焦炉煤气转化油、煤焦油转化油、轻苯加氢精制。
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