Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/d2add99406e0d9de6434e329440b2342.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 chrome-free tanning agent是什么意思，chrome-free tanning agent的翻译，chrome-free tanning agent音标、读音、用法和例句_沉淀汉英词典
In addition, chromium resource in China is very limit, so the research of chrome-free and less-chrome tanning agent are very imperative. 此外我国的铬资源也极为有限，因此研究少铬和无铬鞣剂势在必行。