mouraddd
31-08-2008, 08:54 AM
هذا الملف يعلمك كيفية حساب كفاءة مضخات الطرد المركزى
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http://carsnology.blogspot.com/2008/08/agricultural-pumping-efficiency.html (http://carsnology.blogspot.com/2008/08/agricultural-pumping-efficiency.html)
منقول
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http://carsnology.blogspot.com/2008/08/agricultural-pumping-efficiency.html (http://carsnology.blogspot.com/2008/08/agricultural-pumping-efficiency.html)
منقول