通过大量数据，重点论述几种加氢处理联合工艺从各种油料生产高粘度指数、很高粘度指数和超高粘度指数基础油的情况。
According to a lot of data, some hydrotreating processing schemes for manufacturing HVI, VHVI and UHVI lube base oils from every kind of oils were described.
通过大量数据，重点论述几种加氢处理联合工艺从各种油料生产高粘度指数、很高粘度指数和超高粘度指数基础油的情况。
According to a lot of data, some hydrotreating processing schemes for manufacturing HVI, VHVI and UHVI lube base oils from every kind of oils were described.
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