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Encyclopedia
农学
〔植物病害生物防治理论〕
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交互保护
植物被病毒的无毒品系或弱毒品系侵染后,在形态和生理上产生免疫反应,以保护植株避免被同一病毒的强毒株系侵染,或对另一些寄生物的侵入和寄生关系的建立产生障碍的现象。
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density measurement
density measurement using interferometry
density measurement with schlieren method
density measurement with shadow method
density meter
density method
density metrology
density metrology technology
density modulation
density of a distribution
density of a double layer
density of a graph
density of a probability distribution
density of a rooted tree
density of a sequence
density of a set
density of a simple layer
density of a singular integral
density of a topological space
density of communication
density of death
density of densest lattice packings
density of densest translative packings
density ofelastic potential energy intensile strain
density of electronic states
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