The paper analyzes the problem in separating oiltar by the mechanize trough. It raises the concrete transform plan, which gains the well economic efficiency in reality.
分析了机械化澄清槽分离焦油过程中存在的难题,提出了具体的改造方案,并且在实际中取得较好的经济效益。
2
The oil has hardened to tar.
油已硬化成沥青了。
《柯林斯英汉双解大词典》
3
Soft parts, including skin, hair, and viscera of ice age mammoths, have been preserved in frozen soil or in the oozing tar of oil seeps.