“cold hardening by ventilation in greenhouse”的概念、定义、翻译、参考文献-科学参考

单词	cold hardening by ventilation in greenhouse
释义	cold hardening by ventilation in greenhouse Encyclopedia 农学放风锻炼释 cold hardening by ventilation in greenhouse放风锻炼温室和大棚种植的作物，在一定时期适度揭开薄膜透风，使作物受到一定抗逆锻炼的过程。育苗用的温床和阳畦在定植前通常也需要放风锻炼。
随便看	normal subsemigroup normal subspace normal sum distribution normal summability normal surface normal system normal system of partial differential equations normal tail normal temperature and pressure normal tensor normal theta-function normal time normal to a curve normal to a plane normal to a surface normal tone normal topological space normal topology normal tower normal trace normal tracial weight normal transformation normal triangular matrix normal ultrafilter normal union

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