Reseach on manufacture and appplication of piston ring of piston form drawing oil pumps under oil field well
WANG Shu-fang
ZHANG Wen-xiang
WU Hong-xin
FAN Guang-min
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Publication Date：2000-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 94-95,103 )