The tests reveal that the gas-liquid countercurrent process offers higher desulfurization and dearomatization efficiency and is a cost-effective hydrotreating process.
试验结果证明，气液逆流加氢具有更高的脱硫、脱芳烃深度，是一种经济有效的先进加氢精制工艺。
Black tea extracts are normally produced by a hot or boiling water extraction process usually a countercurrent process.
红茶的提取物通常是用热水或沸水通过逆流萃取工艺来制取的。
It is proposed to use the waste heat from the acid-making process to recover the iron in the acid-making tailing by a countercurrent process.
为此，提出了利用制酸厂的制酸废热，应用逆流式处理工艺回收制酸尾料中的铁。
It is proposed to use the waste heat from the acid-making process to recover the iron in the acid-making tailing by a countercurrent process.
为此，提出了利用制酸厂的制酸废热，应用逆流式处理工艺回收制酸尾料中的铁。
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