Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/45344da939e1fba51b03fdd9077c72b4.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 penetrant test例句_penetrant test英汉例句_penetrant test双解例句_沉淀汉英词典
The paper describes the property, function and application of chemical penetrant, as well as the tentative experiment and the test results analysis. 文中介绍了化学渗透助剂的性能、作用原理及工艺等，并进行了探索性试验与测试数据分析。