声波透射法 DH'0#
http://www.docin.com/p-527945947.html VTs
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单孔法与跨孔法波速测试综合对比分析 OuwEO
http://www.docin.com/p-1240112872.html s#%P9A
单孔法波速测试原理及其在工程中应用 y({ EF~w
https://wenku.baidu.com/view/fd34af551eb91a37f1115caa.html _>(qQ-Px
http://www.docin.com/p-246635352.html