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2. Comparison of X Window System desktop environments

   en.wikipedia.org/wiki/Comparison_of_X_Window...

   A desktop environment is a collection of software designed to give functionality and a certain look and feel to an operating system.. This article applies to operating systems which are capable of running the X Window System, mostly Unix and Unix-like operating systems such as Linux, Minix, illumos, Solaris, AIX, FreeBSD and Mac OS X. [1]

3. Rolls-Royce Trent 900 - Wikipedia

   en.wikipedia.org/wiki/Rolls-Royce_Trent_900

   The Trent 900 is an axial flow, high bypass turbofan with the three coaxial shafts of the Rolls-Royce Trent family. The 2.95 m (116 in) fan with swept blades is driven by a 5-stage LP turbine, the 8-stage IP compressor and the 6-stage HP compressor are both powered by a single stage turbine, with the HP spool rotating in the opposite direction of the others.

4. Shaft (mechanical engineering) - Wikipedia

   en.wikipedia.org/wiki/Shaft_(mechanical_engineering)

   The following stresses are induced in the shafts. Shear stresses due to the transmission of torque (due to torsional load). Bending stresses (tensile or compressive) due to the forces acting upon the machine elements like gears and pulleys as well as the self weight of the shaft. Stresses due to combined torsional and bending loads.

5. Even Flow - Wikipedia

   en.wikipedia.org/wiki/Even_Flow

   "Even Flow" is a song by the American rock band Pearl Jam. Featuring lyrics written by vocalist Eddie Vedder and music written by guitarist Stone Gossard, it was released in 1992 as the second single from the band's debut album, Ten (1991).

6. Engine balance - Wikipedia

   en.wikipedia.org/wiki/Engine_balance

   These take the form of a pair of balance shafts that rotate in opposite directions at twice engine speed, known as Lanchester shafts, after the original manufacturer. In V8 engines , the problem is usually avoided by using a cross-plane crankshaft , and a 180° or single-plane crankshaft is used only in high-performance V8 engines, where it ...

7. Shaft (civil engineering) - Wikipedia

   en.wikipedia.org/wiki/Shaft_(civil_engineering)

   In civil engineering a shaft is an underground vertical or inclined passageway. Shafts are often entered through a manhole and closed by a manhole cover. They are constructed for a number of reasons including: For the construction of a tunnel; For ventilation of a tunnel or underground structure, aka ventilation shaft