Thus it offers theoretical and experiment basis for NDT of the defect like foundation void by means of acoustic features.
为用声学特征进行地基脱空等缺陷无损检测提供了理论和实验依据。
For charges with defect, the more the void ratio, the higher the value, indicating that a higher quality charge can improve the safety of overload resist…
装药中保持一定的孔隙率可以提高装药的抗过载能力，从而说明了分步压装工艺装药密度分布对装药的抗过载安全性是有利的。
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