• In this paper we present the principle and technique for measuring velocity of elastic waves in the bedrock with deep holes, and the effective watertight and pressure-proof measures taken.

    本文介绍基岩弹性测试原理测试技术深孔测试中所采取有效防水压措施。

    youdao

  • In this paper we present the principle and technique for measuring velocity of elastic waves in the bedrock with deep holes, and the effective watertight and pressure-proof measures taken.

    本文介绍基岩弹性测试原理测试技术深孔测试中所采取有效防水压措施。

    youdao

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