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agricultural biological weapons
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agricultural biological weapons
Encyclopedia
农学
〔生物入侵社会影响〕
释
agricultural biological weapons
农业生物武器
由于自然或人为因素(多为人为因素)引入的能够导致农业生态系统平衡被打破进而引发农业生物安全问题的有害外来生物因子。外来生物的入侵往往会影响农林牧渔业的正常生产并造成严重的经济、社会损失。
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relatively prime polynomials
relatively pseudo-complemented lattice
relatively quasicompact set
relatively regular operator
relatively stable
relatively strong topology
relatively uniform convergence
relatively unstable
relative magnetic permeability
relative manifold
relative maximum
relative maximum error
relative measurement
relative method
relative metric
relative minimal curve
relative minimum
relative modular anomaly
relative molecular mass
relative molecular weight
relative motion
relative movement
relative navigation
relative nearness
relative neighborhood
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