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

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).
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