| 单词 | quartz lamps |
| 释义 | quartz /kwörts/nounThe commonest rock-forming mineral, composed of silica, occurring in hexagonal crystals (clear and colourless when pure) or cryptocrystalline adjectiveMade or composed of or with quartz ORIGIN: Ger Quarz, from MHGer quarz, from WSlav kwardy hard quartzifˈerous adjective Quartz-bearing quartzˈite noun A metamorphosed sandstone with the grains welded together quartzitic /-itˈik/ adjective Of or like quartzite quartzˈose adjective Of, like or rich in quartz quartzˈy adjective quartz clock or quartz watch noun One in which a quartz crystal, energized by a microcircuit, does the work of the pendulum or hairspring of the traditional clock or watch quartz crystal noun A disc or rod cut in certain directions from a piece of piezoelectric quartz and ground so that it vibrates naturally at a particular frequency quartz glass noun Fused quartz resistant to high temperatures and transparent to ultraviolet radiation quartz lamp, quartz-halogen lamp or quartz-iodine lamp noun A compact source of light used for high-intensity floodlighting of large areas, in car (fog-)lamps, cine projectors, etc quartzˈ-mill noun A mill or machine for crushing gold-bearing quartz quartz-porˈphyry noun An igneous rock with crystals of quartz and feldspar in a compact or finely crystalline ground-mass of the same quartzˈ-rock noun Quartzite quartzˈ-schist noun A schistose quartzite with mica |
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