upflow visbreaking
... upflow sand filter 上流式砂滤器 upflow visbreaking 上流式减粘 upflow 上升流 ...
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还介绍了我国开发的延迟减粘、上流式缓和减粘裂化等减粘裂化工艺类型。
Several visbreaking techniques in our country, such as delay-visbreaking, up-reaching mild-visbreaking and so on, are also introduced in this paper.
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