英语词汇“friction blocks”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	friction blocks
释义	friction blocks friction blocks [′frik·shən ‚bläks] (petroleum engineering) Thin blocks with cylindrical surfaces that drag on the inside of the well casing to prevent rotation of the packer (seal between the outside of tubing and inside of casing).
随便看	primitive trigeminal artery variant primitive type primitive water primitive yolk sac primitivism primitivism (art) primitivism (art movement) primitivist primitivistic primitivists primitivity primitivo primity prim, juan primly primmed primmer primmest primming primness primo primobolin pri modem primo de rivera primo de rivera, jose antonio

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