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fire coal
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fire coal
Encyclopedia
理学
〔能源概论〕
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fire coal
燃煤
一种常见的固体可燃有机岩,由古代植物遗体经过生物化学作用和地质作用转变而成,其成分主要有碳、氢、氧、氮等元素组成的黑色或褐色固体矿物。又称煤炭。
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space environment effects
space environment experiment satellite
space environment monitoring
space environment monitoring network
space environment near the earth
space environment prediction
space environment simulation and flight training simulation technology
space evolution of urban business arrangement
space-exchange operator
space exchange potential
space exploration
space exploration load
space exploration of the Earth
space exploration of the solar system
space explorations of minor bodies in the solar system
space exposure satellite
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space filling factor
space-filling function
space filling model
space-filling model
space-filling polyhedron
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