all-welded structure
51jewelry — /jooh euhl ree/, n. 1. articles of gold, silver, precious stones, etc., for personal adornment. 2. any ornaments for personal adornment, as necklaces or cuff links, including those of base metals, glass, plastic, or the like. Also, esp. Brit.,… …
52One World Trade Center — Freedom Tower redirects here. For other uses, see Freedom Tower (disambiguation). For the building complex destroyed in the September 11 attacks, see World Trade Center. For the specific WTC building formerly known as One World Trade Center, see… …
53Japanese sword — Traditional Samurai swords and fittings A Japanese sword, or nihontō (日本刀 or にほんとう, lit. Japanese sword …
54Tuff — (from the Italian tufo ) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff should not be confused with tufa , another type of rock. Volcanic ashThe products of a volcanic eruption are… …
55Collapse of the World Trade Center — Coordinates: 40°42′41.12″N 74°00′44.00″W / …
56Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations …
57Fuselage — of a Boeing 737 shown in brown The fuselage (pronounced /ˈfjuːzəlɑːʒ/; from the French fuselé spindle shaped ) is an aircraft s main body section that holds crew and passengers or cargo. In single engine aircraft it will usually contain an… …
58Welding — 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… …
59Derailment — For the use of the term in psychiatry, see derailment (thought disorder). Derailed Tatra T3 tram in Brno, Czech Republic …
60military technology — Introduction range of weapons, equipment, structures, and vehicles used specifically for the purpose of fighting. It includes the knowledge required to construct such technology, to employ it in combat, and to repair and replenish it.… …
