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| High low
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Multilevel carpets with high and low loop pile areas or high cut-pile and low loop areas. The latter is also called a cut and loop carpet. |
| High speed steel (hss)
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High Speed Steel (sometimes called speed steel) is designated as hss. It is heat-treated, hardened steel alloyed from various mixes of chromium, vanadium, molybdenum, tungsten and cobalt. Hss is used in many types of drill bits and cutting tools which bore metal because its content allows it to remain hard at high temperatures, resisting drilling friction heat. HSS provides more durable performance than carbon steel. |
| High strength bolts
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Bolts constructed of a high tensile strength steel alloy. High Tension High voltage electricity. |
| High velocity hurricane zone (fbc)
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This zone consists of Broward and Dade counties.
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| High victorian italianate
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Nineteenth century style house with three different kinds of window arches, the primary distinguishing characteristic of this style. The arches are straight-sided, flat-topped and rectangular. |
| High water mark
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The highest recorded level of water in any body of water. |
| High-density overlay (hdo)
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A type of plywood, which is finished with a resin-impregnated fiber overlay, which gives it a permanent hard finish, because the overlay material is bonded to both sides of the plywood. Used often for exterior work or wherever material takes a lot of wear, such as cabinets, countertops, etc. |
| High-efficiency particulate air (hepa) filter
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A specialized filter capable of removing 99.97% of particulates 0.3 µ in diameter. |
| High-intensity discharge (hid) lamp
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A general term for mercury, metal halide and high-pressure sodium lamps. Hid lamps contain gases and metal salts operating at relatively high pressures and temperatures. |
| High-pressure sodium (hps) lamps
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Hps lamps are high intensity discharge light sources which produce light by an electrical discharge through sodium vapor operating at relatively high pressures and temperatures. |
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