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File: D:\wwwroot1\alipdf.com\app\core\DS_Controller.php
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Function: __construct
File: D:\wwwroot1\alipdf.com\app\core\DS_Controller.php
Line: 175
Function: __construct
File: D:\wwwroot1\alipdf.com\app\controllers\Search.php
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Function: __construct
File: D:\wwwroot1\alipdf.com\index.php
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Function: require_once
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1新型油气混输泵出口球阀滞后角的计算与分析 * 张玉林 (重庆大学 城市科技学院, 重庆摇 402167) 摘摇 要:依据工程热力学与几何学相关知识,推导并建立了阀球密度、气液比与新型油气混输泵出口球阀滞后角之间 的数学方程式,并对方程式进行了讨论...
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Backtrace:
