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灯语
一种视觉通信工具,以灯光一明一暗的间歇呈现出长短不同的视觉信号来传递语言符号。
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grassland beneficial insects
grassland biohazard
grassland bird
grassland burning
grassland carbon storage
grassland civilization
grassland classification
grassland classification in China
grassland classification in the Soviet Union
grassland class map
grassland climate disaster
grassland community structure
grassland degradation
grassland degradation and restoration mechanism and grassland health evaluation in northern China
grassland degradation in China
grassland desertification
grassland disasters
grassland dung spot
Grassland Eco-chemistry
grassland ecological civilization
grassland ecological-economic regions in China
grassland ecological risk
grassland ecological security
grassland ecological subsidy policy
grassland ecological threshold
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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