pipe bend
41Countercurrent exchange — Counter heat current exchange: Note the gradually declining differential and that the once hot and cold streams exit at the reversed temperature difference; the hotter entering stream becomes the exiting cooler stream and vice versa.… …
42London Bridge Is Falling Down — (Round 502) is a well known traditional nursery rhyme which is found in different versions all over the world. The main verse is::London Bridge Is falling down, :Falling down, Falling down. :London Bridge Is falling down,:My fair lady. The rhyme… …
43building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
44Potomac River — Coordinates: 37°59′57″N 76°14′59″W / 37.99917°N 76.24972°W / 37.99917; 76.24972 …
45Collider Detector at Fermilab — For other uses of CDF , see CDF (disambiguation). Wilson Hall at Fermi Lab …
46Electrical conduit — risers, seen inside fire resistance rated shaft, as seen entering bottom of a firestop. The firestop is made of firestop mortar on top, rockwool on the bottom. Raceways are used to protect cables from damage …
47Buchan trap — A Buchan Trap is a device made from fireclay located in a domestic sewer pipe to prevent vermin entering the line. The trap uses a water seal to prevent rats and mice climbing any further along the pipe. Waste flows from the house through a U… …
48elbow — /el boh/, n. 1. the bend or joint of the human arm between upper arm and forearm. 2. the corresponding joint in the forelimb of a quadruped. See diag. under horse. 3. something bent like an elbow, as a sharp turn in a road or river, or a piece of …
49particle accelerator — accelerator (def. 7). [1945 50] * * * Device that accelerates a beam of fast moving, electrically charged atoms (ions) or subatomic particles. Accelerators are used to study the structure of atomic nuclei (see atom) and the nature of subatomic… …
50Hydraulic machinery — are machines and tools which use fluid power to do work. Heavy equipment is a common example.In this type of machine, high pressure hydraulic fluid is transmitted throughout the machine to various hydraulic motors and hydraulic cylinders. The… …
