Warning: file_put_contents(/www/wwwroot/ppbbu/bieo.cn/cache/4146f04285e1be8b5d6f7f6dd27ab084.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/bieo.cn/index.php on line 58 counter lag-time例句_counter lag-time英汉例句_counter lag-time双解例句_衣物护欧路词典
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。