“variety evolution”的概念、定义、翻译、参考文献-科学参考

单词	variety evolution
释义	variety evolution Encyclopedia 农学品种演化释 variety evolution品种演化在农业生产逐渐发展的背景下，人类依据生态环境、耕作条件以及自身需求的改变，通过逐代将驯化作物中利于个体生存和繁殖后代的变异进行选择累积，从而演变形成新的种、亚种、品种的过程。又称品种演变。
随便看	space coordinate system space coordinate transformation space correlation space correlation function space correlation function of heterogeneous system space correlation of particle number density fluctuation space correlation, spatial correlation space cost function space-coupling spacecraft spacecraft ablative thermal protection spacecraft active attitude control system spacecraft assemble plant spacecraft assembly and integration spacecraft astronomy spacecraft attitude control spacecraft attitude control actuator spacecraft attitude control fly wheel spacecraft attitude control system spacecraft attitude determination spacecraft attitude maneuvering spacecraft autonomous control spacecraft autonomous navigation system spacecraft communication, telemetering, command and tracking system spacecraft control system

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