Warning: file_put_contents(): Only 0 of 5147 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/oclz.com/index.php on line 55 counter lag-time例句_counter lag-time英汉例句_counter lag-time双解例句_菜篮子兴趣思朗文词典
It is hard to build a precise math model for counter-gravity casting process for its time lag, uncertainty and complexity. 由于反重力铸造过程的时滞性、不确定性、复杂性，难以建立精确的数学模型。