ماذا بعد ؟؟؟؟؟؟؟؟؟!!!!!!
ماذا بعد ؟؟؟؟؟؟؟؟؟!!!!!!
بالفعل
ماذا بعد
كاريكاتور معبر
شكرااااا اختي
اشكرك عزيزتى
على التعبير بالصوره
مودتى
جميل جدا ..
شكرا لكي ..
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A gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar.
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