Warning: file_put_contents(/www/wwwroot/ppbbu/3402.cn/cache/d66cac183e0d75a1d3867173efcc0321.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/3402.cn/index.php on line 58 pretan是什么意思,pretan的翻译,pretan音标、读音、用法和例句_咖味滋双解词典
Using the syntan to pretan vegetable-tanned sole leather ,the quantity of tannin extract can be reduced in vegetable tanning. 該郃成鞣劑用於植鞣底革的預鞣,可減少植鞣時栲膠的用量。