delivery casing 中文意思是什麼
delivery casing
解釋
上殼(井泵);吐出段-
Petroleum and natural gas industries - corrosion - resistant alloy seamless tubes for use as casing, tubing and coupling stock - technical delivery conditions
石油和天然氣工業.用作套管油管和接箍的防腐合金無縫鋼管.交貨技術條件
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