Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/d87ec5f7eff62fddcbbb984fbe9affef.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 bn source例句_bn source英汉例句_bn source双解例句_绍翊字体网有道词典
In this paper, we report the effect of the temperature of introducing secondary nitrogen source on the different phases and their contents of BN samples. 本文中，我们探讨了水热合成立方氮化硼过程中，二次氮源的加入温度对产物中物相种类及其含量的影响。