直达波法测定整板基础砼强度
Testing the concrete strength of a mat foundation by direct wave method
直达波法检测路基压实度
Detecting the Subgrade Compaction by the Direct Wave Method
直达波法采用叩板法来激发剪切波，这样根据测得的剪切波波速只能求出路基表层土的干密度。
With The direct wave method we only can work out the dry density of the topsoil of subgrade .
直达法