Warning: file_put_contents(/home/www/wwwroot/zidian/69228.com/cache/bfac0684e3699a3a2deaa8942ad93196.txt): failed to open stream: No space left on device in /home/www/wwwroot/zidian/69228.com/index.php on line 55 久久久久国产一级毛片清晰版,草莓视频APP在线入口观看,精品免费一区二区三区
The paper discusses in detail the principle of selecting the stock of turbine blade and determining the allowance for machining the stock. 詳細(xì)論述了汽輪機(jī)葉片各種毛坯形式的選擇原則及毛坯機(jī)械加工余量的確定。