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jar knocker例句_jar knocker英汉例句_jar knocker双解例句_94生活常识网有道词典
94生活常识网有道词典

jar knocker

J 开头单词

常见例句

    双语例句

  • It was expounded about the structure, work principle and field test effect of water power jar knocker with slide valve.
    阐述了滑阀式水力振动器的结构、工作原理和现场试验效果。
    • 返回 jar knocker