Lubrication layer properties during concrete pumping

作者: Myoungsung Choi , Nicolas Roussel , Youngjin Kim , Jinkeun Kim

DOI: 10.1016/J.CEMCONRES.2012.11.001

关键词:

摘要: … energy is scattered and lost for the echo measurement. Thus, as the measuring depth increases, the amplitude of echoed ultrasound energy … of echoed ultrasound energy is not …

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