标准贯入器 standard penetrometer
贯入器
Penetration device
以上为机器翻译结果，长、整句建议使用 人工翻译 。
大隆水库大坝坝基为含卵砾中粗砂层，即使大功率振冲器也难以贯入。
The foundation of the dam for Dalong reservoir consists of the layer of medium-coarse sand with gravel, so it is difficult to be penetrated even by the high-power vibrator.
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