Warning: file_put_contents(/www/wwwroot/ppbbbu/6s-iso.com/cache/77964cb78ea4eb19b63ce8ea6d6fe383.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/6s-iso.com/index.php on line 55 无码ol丝袜高跟秘书在线观看,国产午夜精品理论片免费观看
It loses water and converts to pyrophosphate and metaphosphoric acid when being high-temperature heated. 經(jīng)高溫加熱便失水生成焦磷酸和偏磷酸，長(zhǎng)時(shí)間受冷即生成結(jié)晶，有腐蝕性，易吸溼，密封保存。