Warning: file_put_contents(/www/wwwroot/ppbbbu/202081.com/cache/49f6f86607536738818c35d681f83e89.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/202081.com/index.php on line 55 pretan例句_pretan英汉例句_pretan双解例句_2020年的事情英文词典
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。