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MAA Dah-You 《声学学报：英文版》1990,(3)
Just forty years ago,Zwikker and Kosten‘s classical work"Sound AbsorbingMaterials"was published and the theoretical foundation of sound absorbing materi-als was laid.And Mechel‘s monograph"Schallabsorber"is an important develop-ment.The book consists of three volumes.Volume one is outer sound field,thatis,interaction between sound field and sound absorber;volume two is internalsound field,or the structure and application of sound absorber;volume three iscomputer program,a supplementary volume.Volume one is now published.The 相似文献
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We prove that the Harris contact process shows metastable behavior for any supercritical value of the parameter, even when some macroscopic observables are observed. 相似文献
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Peter A. Gillespie 《辐射效应与固体损伤》2013,168(1-4):319-320
NEUTRON RADIOGRAPHY HANDBOOK. Compiled by the Neutron Radiography Working Group under the auspices of the Commission of the European Communities, Joint Research Centre. Edited by P. Van der Hardt and H. Roltger. Price DFL 60.00 (D. Reidel Publishing Co., Dordrecht, Boston, London 1981). 相似文献