Black tea extracts are normally produced by a hot or boiling water extraction process usually a countercurrentprocess.
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。
2
It is proposed to use the waste heat from the acid-making process to recover the iron in the acid-making tailing by a countercurrentprocess.
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。
3
The tests reveal that the gas-liquid countercurrentprocess offers higher desulfurization and dearomatization efficiency and is a cost-effective hydrotreating process.