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沥青
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沥青
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沥青
由高分子的烃类和非烃类组成的黑色到暗褐色的固态或半固态黏稠状物质。全部以固态或半固态存在于自然界,或由石油炼制过程制得,加热时逐渐融化。
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沥青,柏油
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asphalt
沥青
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mine gas
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mine hoisting
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mine land reclamation bond
Minelauva
mine management parameters
mine manufacturing execution system
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mine monitoring and supervision system
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mine personal regional positioning system
mine personnel positioning system
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