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polymeric solid propellants
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polymeric solid propellants
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理学
高聚物固体推进剂
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polymeric solid propellants
高聚物固体推进剂
由高聚物形成的固体火箭发动机动力源用材料。
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plant cultivation non-point source pollution control technology
plant culture
plant cytotaxonomy
plant desiccation tolerance
plant detoxification to pollutant
plant diffusion coefficiency
plant disease
plant disease control (management)
plant disease mechanism
Plant disease physical control
plant disease prevalent
plant disease resistance
plant diseases and insect pests control
plant diseases and insect pests prediction model of agriculture
plant domestication
plant dominance
plant dormancy
plant drought tolerance
plant dyeing
plant ecology
plant ecophysiology of temperature
planted forest
planted forest resources of China
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