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The two-seat B-4 trainer was a mid-wing monoplane with wings of rectangular plan out to blunted tips. Structurally, the largely wooden wings were based on pairs of box spars and spruce and plywood ribs, with duralumin sheet stiffening the leading edges. The rest of the wing was fabric covered.
The Emsco B-2 Challenger was a US three-engined, six passenger aircraft flown in 1929. Only two were built and they were quite soon converted into two different Emsco ...
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The Emsco B-8 was a two-seat, single-engine, low-wing, twin boom experimental aircraft designed by Charles F. Rocheville in 1930 while he was vice president of Emsco Aircraft Corporation, Long Beach, California.
The crushed stone materials are conveyed to crushing plant by belt conveyor for secondary crushing before they are sent to vibrating screen to be separated. After separating, qualified materials will be taken away as final products, while unqualified materials will be carried back to the stone crushing equipment for recrushing.
A trench drain (also known as a channel drain, line drain, slot drain, linear drain, or strip drain) is a specific type of floor drain featuring a trough- or channel-shaped body. It is designed for the rapid evacuation of surface water or for the containment of utility lines or chemical spills.
Slipform stonemasonry is a method for making a reinforced concrete wall with stone facing in which stones and mortar are built up in courses within reusable slipforms. It is a cross between traditional mortared stone wall and a veneered stone wall. Short forms, up to 60 cm high, are placed on both sides of the wall to serve as a guide for the ...
A planter is a farm implement, usually towed behind a tractor, that sows (plants) seeds in rows throughout a field. [ 1 ] [ 2 ] It is connected to the tractor with a drawbar or a three-point hitch . Planters lay the seeds down in precise manner along rows.