Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/1a21748e1df038aac8f0c7781bfceb8b.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 trays是什么意思，trays的翻译，trays音标、读音、用法和例句_绍翊字体网有道词典
This paper analyzed comprehensively the application of high - efficiency trays in ethylene plant in terms of bottleneck elimination. 对高效塔板在乙烯装置上的应用从脱瓶颈方面进行了较全面的分析。