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biheiri-22178051
Question added by حمدي محمد بركه بحيري بحيري, موظف, شركه وذر فورد العالميه للحفر - 10 years ago

هل الغاز H2S خطير علي موضفين الحفر ومهي نسبت الخطور؟

Laser Engraving

Drilling Engineering

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