93 صفحه pdf
API Vocational Training Book-2:1990
Corrosion of oil and gas well equipment
ویرایش دوم
API VT-2:1990-Corrosion of oil and gas well equipment
93 صفحه pdf
API Vocational Training Book-2:1990
Corrosion of oil and gas well equipment
ویرایش دوم
IEC 62626-1:2014-Low-voltage switchgear and controlgear enclosed equipment – Part 1: Enclosed switch-disconnectors outside the scope of IEC 60947-3 to provide isolation during repair and maintenance work