macaroni string

常見例句

雙語例句

• A string of 3/4 in. to 1in. diameter tubing or pipe. The macaroni string may also be a tubing string inside a tubing string.
  直徑3/4英寸至1英寸的油管柱或管柱。小直徑管柱也可為油管柱內(nèi)的油管柱。
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