... tar asphalt 柏油沥青 tar asphalt mixture 柏油沥青 tar bound surface 柏油结路面 ...
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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；
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