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河道增养殖
释义
河道增养殖
Encyclopedia
农学
河道增养殖
释
river aquaculture
河道增养殖
在河道沟渠采用繁殖保护、人工放流和改善水域环境等措施来提高水产资源的数量和质量的过程。是保证水产资源再生产的稳定和持续增长,提高渔业生产的经济效益的重要途径。包括增殖和养殖两个方面。又称河道沟渠增养殖、河沟增养殖、外荡增养殖等。
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instrument flight
instrument for airborne gravity measurements
instrument for engineering properties
instrument for gradient gravity measurements
instrument for measuring the topography of the seabed
instrument for measuring tree
instrument for optical transfer function
instrument for printing quality
instrument for radiation protection
instrument for solar and lunar eclipses
instrument for technical spacification of textiles
instrument function
instrumenting
instrument landing system
instrument of electrical prospecting
instrument of production
instrument of scattering analysis
instrumentorium
instrument performance index
(instrument) playing skills of Quyi
instrument response characteristic
instrument room
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instruments display system
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