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水生态系统保护
释义
水生态系统保护
Encyclopedia
工学
水生态系统保护
释
conservation of aquatic ecosystem
水生态系统保护
通过采用行政、技术、经济和法律手段,以维护水生态系统功能和物理、化学和生物完整性的所有行为活动。
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frequency-shift keying
frequency-shift keying, FSK
frequency-shift keying modulation and demodulation
frequency shift of scattering light
frequency shift theorem
frequency-shift track circuit
frequency-size distribution
frequency spectrum
frequency stability
frequency stability criterion
frequency stability measurement
frequency stabilization
frequency stabilized laser
frequency standard
frequency standards
frequency step
frequency sweep mode
frequency swept laser
frequency switching
frequency synchronization
frequency synthesis
frequency synthesized signal generator
frequency synthesizer
frequency table
frequency theorem
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