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مسام بحجم ثقب دبوس على فيلم الطلاء ، أو حتى نفطة - هذا هو المذيب / الغاز الذي "حاول الهروب ولكنه لم يستطع" وحاصر في الطلاء.
باختصار : ثقوب الدبوس والفقاعات = الغاز / المذيب الأساسي المحاصرين بعد تجفيف السطح ؛ حل عن طريق الرش بعد الجفاف الكامل ، باستخدام رقيق مطابق ، ورفع درجة الحرارة ببطء.I.الأسباب