The absorbability in pelt and tanning properties of auxilliary tanning agents PAT and PCP had been investigated.

 
  • 本文研究了助鞣劑PAT和PCP在裸皮中的吸收情況和鞣革性能。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan