“sowing in ice crust”的概念、定义、翻译、参考文献-科学参考

单词	sowing in ice crust
释义	sowing in ice crust Encyclopedia 农学顶凌播种释 sowing in ice crust顶凌播种春季气温回升后，当土壤表层解冻5～7厘米而下层土壤仍结冻时，采用机耕进行播种的方式。
随便看	optical field optical field induced birefringence optical field, light field optical film optical filter optical flame fire detector optical flare optical flash optical flat optical flatness optical flight control optical flow optical flow navigation optical focal points optical Fourier analysis optical Fourier transform optical frequency optical frequency comb optical frequency comb generator optical frequency domain analyzer optical frequency doubling optical frequency measurements optical frequency mixing optical frequency standard optical functional composites

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