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2. Center-pivot irrigation - Wikipedia

   en.wikipedia.org/wiki/Center-pivot_irrigation

   A satellite image of circular fields characteristic of center pivot irrigation, Kansas Farmland with circular pivot irrigation. Center-pivot irrigation (sometimes called central pivot irrigation), also called water-wheel and circle irrigation, is a method of crop irrigation in which equipment rotates around a pivot and crops are watered with sprinklers.

3. Vermeer Corporation - Wikipedia

   en.wikipedia.org/wiki/Vermeer_Corporation

   Portable Pow-R Drive, a self-propelled irrigation system, hay conditioner and cutter are introduced in the 1950s. Vermeer invents the first machine to dig, transport and replace large trees in the 1960s. The first larger round hay baler was invented by Gary Vermeer in 1971. Allis Chalmers first introduced the small round rotobaler in 1947.

4. Glossary of firefighting equipment - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_firefighting...

   A sprinkler system having pressurized air (rather than water) in the distribution pipes until a heat-activated sprinkler head opens and releases the stored air pressure, which in turn opens the main water valve (and possibly an accelerator valve) to flow water to the open sprinkler(s); used where the protected premises are not heated during ...

5. Self-propulsion - Wikipedia

   en.wikipedia.org/wiki/Self-propulsion

   The sequence of images demonstrating the rotation of the self-propelled PVC tubing, containing camphor. [1] The time separation between frames is 0.33 s. Self-propulsion is the autonomous displacement of nano-, micro- and macroscopic natural and artificial objects, containing their own means of motion.

6. Swather - Wikipedia

   en.wikipedia.org/wiki/Swather

   MacDon swather New Holland Haybine H8040 self-propelled swather. A swather (North America), or windrower (Australia and rest of world), is a farm implement that cuts hay or small grain crops and forms them into a windrow for drying. Crimper rollers and cutting discs. They may be self-propelled with an engine, or drawn by a tractor and power ...

7. Lifeboat (shipboard) - Wikipedia

   en.wikipedia.org/wiki/Lifeboat_(shipboard)

   Lifeboats have oars, flares and mirrors for signaling, first aid supplies, and food and water for several days. Some lifeboats are more capably equipped to permit self-rescue, with supplies such as a radio, an engine and sail, heater, navigational equipment, solar water stills, rainwater catchments and fishing equipment.