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套管刮削器
Casing scrapers
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海上钢结构疲劳强度分析推荐作法
Recommended practice for fatigue strength analysis of offshore steel structures (DNV RP-C203:2001, IDT)
价格：￥0.00
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下灰车
Pneumatic cement-discharging tanker
价格：￥0.00
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小直径流量含水测试仪
Small diameter flowrate and watercut logging tool
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