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地力常新壮说
释义
地力常新壮说
Encyclopedia
理学
〔古代农业思想〕
释
theory on everlasting of soil fertility
地力常新壮说
宋代陈旉对土壤肥料之科学总结,认为合理利用土壤、改良土壤和培肥土壤,土壤肥力不会减弱衰退,反而越种越肥,实现地力的常年新壮,驳斥了地力衰退论。
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difference scheme
difference semigroup
difference sequence
difference series
difference set
difference table
difference triangle set
differencing
different
different association theory
different from zero
differentiability
differentiability condition
differentiability criterion
differentiability of a function
differentiability of a solution
differentiability theorem
differentiable
differentiable action
differentiable algebraic system
differentiable analysis
differentiable arc
differentiable chain
differentiable curve
differentiable dependence
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