heavy oil processing unit 稠油加工装置
secondary processing heavy oil 二次加工重油
deep processing of heavy oil 重油深度加工
There are equipment corrosion, insufficient heavy oil processing depth, environmental pollution, lower product quality and other problems in inferior crude oil processing.
加工劣质原油存在设备腐蚀，重油加工深度不足，污染环境，降低产品质量等问题。
Heavy oil processing is a very important way to make reasonable use of petroleum resource.
重油深度加工是合理利用石油资源的重要途径。
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