Warning: file_put_contents(/www/wwwroot/ppbbu/52065.com/cache/cf7c9a0c0b40a4c7242f4c82706a9dfd.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/52065.com/index.php on line 55 pretan是什么意思，pretan的翻译，pretan音标、读音、用法和例句_伍贰汉英词典
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。