tar oil ; viscous heavy oil
... taryield焦油产率 tar高粘重质原油 TAR检验分析报告 ...
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我国所产原油80%以上为流动性较差的高凝含蜡原油和高粘重质原油。
More than 80% of crude oils produced in China are the high-pour-point waxy crude or the viscous heavy crude with poor flow ability.
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