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| Peen
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The wedge or rounded striking head, opposite the face of a hammer, which is used for shaping or striking metal. |
| Peening
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Hammering or blending metal to change its surface or shape. |
| Peg
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Small diameter cylinder, of wood or other material, which is used to connect two or more pieces of something by being fit into a hole in each. These are often called dowels when used to strengthen joints or connect pieces. Pegs can be used to hold objects when half of the peg is left protruding. |
| Pegboard
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Sheet of compressed fiberboard that has small, evenly spaced holes for pegs, hooks or hangers and is used to store tools, etc. |
| Pegging down
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A very effective way to increase flower production on Bonbon & Hybrid Perpetual roses that send up long shoots with oily flowers on the end. It is a time consuming method but well worth the display. This is generally done in the fall. Instead of pruning, spread the runners and fasten to the soil with wire loops. Basically you are training the plant horizontally. |
| Pellet stove
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A space heating device that burns pellets; are more efficient, clean burning, and easier to operate relative to conventional cord wood burning appliances. |
| Pellets
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Solid fuels made from primarily wood sawdust that is compacted under high pressure to form small (about the size of rabbit feed) pellets for use in a pellet stove. |
| Pelton turbine
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A type of impulse hydropower turbine where water passes through nozzles and strikes cups arranged on the periphery of a runner, or wheel, which causes the runner to rotate, producing mechanical energy. The runner is fixed on a shaft, and the rotational motion of the turbine is transmitted by the shaft to a generator. Generally used for high head, low flow applications. |
| Pelton wheel
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Invented around 1890, to improve the water wheel and to drive electrical generators, this water turbine wheel has high pressure water directed at the buckets around its outside, turning the wheel. |
| Penal valve
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A commercial flush valve, so-named because of its use in penal institutions. |
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