penetration resistance
71papermaking — [pā′pər māk΄iŋ] n. the making of paper papermaker n. * * * pa·per·mak·ing (pāʹpər mā kĭng) n. The process or craft of making paper. paʹper·mak er n. * * * Introduction formation of a matted or felted sheet, usually of cellulose fibres,… …
72Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… …
73History of Albania — Prehistory …
74Firestop — A firestop is a passive fire protection system of various components used to seal openings and joints in fire resistance rated wall and/or floor assemblies, based on fire testing and certification listings. Unprotected openings in fire… …
75FRANÇAIS (EMPIRE COLONIAL) — Avec 12 millions de kilomètres carrés et 68 690 000 habitants, l’empire colonial français était en 1939 le deuxième du monde, après celui de l’Angleterre. À vrai dire, la notion d’empire colonial français est relativement récente et n’a jamais… …
76Geotechnical engineering — [ Boston s Big Dig presented geotechnical challenges in an urban environment.] Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. Geotechnical engineering includes investigating …
77Welding — is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld puddle ) that cools to… …
78CHINE (L’Empire du Milieu) - Histoire — Comme les pays du bassin méditerranéen et de l’Europe, la Chine d’aujourd’hui est le point d’aboutissement d’une très longue évolution où les facteurs de continuité ne sont sans doute pas plus significatifs pour l’historien que ceux que l’on… …
79Blitzkrieg — (German for lightning war Audio|De blitzkrieg.ogg|listen) is a popular name for an offensive operational level military doctrine which involves an initial bombardment followed by the employment of motorized mobile forces attacking with speed and… …
80Ferrage (industrie) — Soudage Wikibooks propose un ouvrage abordant ce sujet : Soudage. Le …
