Using a solution of tanbark, the tanner treated the cowhide, transforming it into supple leather.

那位制革人鞣料溶液处理了一下母牛，把它做成了柔韧革。

Tanning converts the otherwise perishable skin to a stable and nondecaying material.

制革把容易腐烂动物转换成稳定、不会变质材料。

By pre aeration in tanyard wastewater, the effect of primary settling improves obviously.

制革污水采预曝气处理后，可大大提高初沉池沉淀效果。

Deliming using CO2 Supercritical Fluid(CO2 SCF) as reactant was investigated, and the effect of the presure, temperature and time on deliming and degrease was studied.

本文以CO2超临界流体作反应物于制革脱灰，研究了超临界CO2压力、温度、时艺对脱灰和脱脂影响。