The New Encyclopędia BritannicaEncyclopędia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 55
... materials be intercommunicat- ing , a closed - cell foam material is not a good sound absorber . Porous sound - absorbing materials may some- times be faced with hard - surfaced , refinishable perfo- rated panels , wood strips , or the ...
... materials be intercommunicat- ing , a closed - cell foam material is not a good sound absorber . Porous sound - absorbing materials may some- times be faced with hard - surfaced , refinishable perfo- rated panels , wood strips , or the ...
Page 88
Polymeric materials Collagen Natural gums Infusible and insoluble bonds 0 Rigid or. Adhesives Adhesives are substances capable of holding materials together by surface attachment . Egyptian carvings dating back 3,300 years depict the ...
Polymeric materials Collagen Natural gums Infusible and insoluble bonds 0 Rigid or. Adhesives Adhesives are substances capable of holding materials together by surface attachment . Egyptian carvings dating back 3,300 years depict the ...
Page 1096
... materials . The best stone ( and brick ) bonding is that in which blocks are placed so that the vertical joints in one course are not above the joints in the courses above and below , since the stone resists deformation better than any ...
... materials . The best stone ( and brick ) bonding is that in which blocks are placed so that the vertical joints in one course are not above the joints in the courses above and below , since the stone resists deformation better than any ...
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