炼重硫油砂更难，但这是美国的强项，炼出更多高附加值的化工产品

来源: victor1988 于 2026-01-06 13:13:31 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.