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声波探测仪
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声波探测仪
Encyclopedia
理学
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sonic detector
声波探测仪
通过向岩体、岩石、混凝土等发射声脉冲,接收声场经介质传播的声波信号,并分析介质的时间、能量、频率等声波变化的观测仪器。
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biodiagenesis
bio-diesel
biodiesel
biodiesel prepared by emulsification
biodiesel prepared by transesterification
biodiesel technology
biodiversity
Biodiversity and Ecological Processes in Terrestrial Herbaceous Ecosystems
biodiversity and ecosystem functioning experiment:BEF experiment
biodiversity conservation
bio-diversity conservation in China
biodiversity decline in China
Biodiversity Heritage Library
biodiversity hotspots
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Biodiversity Indicators Partnership
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biodiversity information standards
Biodiversity International
biodiversity inventory
Biodiversity loss in the invaded range
biodiversity monitoring
biodiversity of scenic regions
biodiversity protection law
biodiversity use in field scale
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