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ما هو أقصى قيمة لمعامل بيتا للصفيحة المثقوبة؟ ما هو الحد الذي إذا تجاوزه لا يُسمح؟
نظريًا، لا ينبغي أن يتجاوز 0.75، وفي الممارسة العملية، فإن قيمة تزيد عن 0.7 ليست جيدة.
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