dust-proof electrical equipment
41Basement — This article is about the section of a building. For other uses, see Basement (disambiguation). An unfinished basement used for storage and exercise equipment …
42M39 Pantserwagen — Type Armoured car Place of origin  Netherlands …
43Attempts to escape Oflag IV-C — For a complete list, see List of attempts to escape Oflag IV C. Prisoners made numerous attempts to escape Oflag IV C, one of the most famous German Army prisoner of war camps for officers in World War II. Between 30 and 36 (German/Allied… …
44china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material …
45China — /chuy neuh/, n. 1. People s Republic of, a country in E Asia. 1,221,591,778; 3,691,502 sq. mi. (9,560,990 sq. km). Cap.: Beijing. 2. Republic of. Also called Nationalist China. a republic consisting mainly of the island of Taiwan off the SE coast …
46Passive solar building design — Elements of passive solar design, shown in a direct gain application …
47Health and Disease — ▪ 2009 Introduction Food and Drug Safety. In 2008 the contamination of infant formula and related dairy products with melamine in China led to widespread health problems in children, including urinary problems and possible renal tube… …
48Bunker gear — [ Common turnout coat and turnout pants (dark with reflective safety stripes on the left) hazmat suit (yellow in the middle) fire proximity suit (silver on the right)] Turnout gear or bunker gear are terms used by many firefighters to refer to… …
49nuclear weapon — an explosive device whose destructive potential derives from the release of energy that accompanies the splitting or combining of atomic nuclei. [1945 50] * * * or atomic weapon or thermonuclear weapon Bomb or other warhead that derives its force …
50Hall effect — For the Colombian band, see The Hall Effect (band). The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor, transverse to an electric current in the conductor and a magnetic field perpendicular …
