Warning: file_put_contents(/home/www/wwwroot/zidian/69228.com/cache/27953390872101f7416955ab0907e40f.txt): failed to open stream: No space left on device in /home/www/wwwroot/zidian/69228.com/index.php on line 55 香蕉久久精品日日躁夜夜躁,A国产乱理伦片在线观看夜
Light stabilizers are one of accessory ingredients which restrain photo-oxidative degradation of polymer materials. 光穩(wěn)定劑是抑制或減緩由于光氧化作用而使高分子材料發(fā)生降解的助劑。
The results showed that synergistic combination of aromatic ketones with Co or Fe complexes has better auto-oxidative or photo-oxidative degradation than the individual use of aromatic ketones. 其研究結(jié)果表明，芳香酮類光敏劑與鈷或鐵絡(luò)合物光敏劑協(xié)同使用，比前者單獨(dú)使用，具有更好的自氧化或光氧化降解作用。