Cyclic Annular(环状), 此释义来源于网络辞典。
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the annular cyclic pressure loss 环空循环压耗
Therefore, a downhole tool that can reduce the annular cyclic pressure loss and introduced its structure, principle of work and technical parameters were put forward.
提出了一种减小钻井泥浆环空循环压耗的井下工具，介绍了该工具的结构、工作原理、技术参数。
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