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构成复合音的一系列分音中,频率最低的分音。
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声带振动所引起的周期性对应的信号基本谐波。
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marine thematic survey
marine thermodynamics
marine total nitrogen meter
marine total phosphorus meter
marine tourism
marine tourism geological survey
marine towed multi-components electromagnetic receiver
marine traffic engineering
marine traffic situation
Marine Training School in Kiribati
marine transfer equipment
marine transient electromagnetic instrument
marine transmission device
marine transmission shaft
marine transportation
marine transportation industry
marine trophic index
marine velvet
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marine warm water species
marine water quality criteria
marine water quality monitoring
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marine water supply system
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