“poplar canker”的概念、定义、翻译、参考文献-科学参考

单词	poplar canker
释义	poplar canker Encyclopedia 农学森林病害释 poplar canker杨树溃疡病树木枝、干局部皮层坏死，后期因坏死组织失水而稍有下陷，有时周围还产生一圈稍隆起的愈伤组织，溃疡病广义上除包括典型的溃疡病外，还包括腐烂病、枝枯病、干癌病等所有引起树木枝干韧皮部坏死或腐烂的病害。
随便看	covariant formulation of the charge conservation covariant functor covariant index covariantly constant field covariantly constant spinors covariant mapping covariant morphism functor covariant of a group covariant of a tensor covariant order covariant principle covariant quantization covariant set covariant spinor covariant tangent bundle covariant tensor covariant tensor algebra covariant tensor field covariant tensor fields on complex manifold covariant transformation covariant valence covariant vector covariant vector field covariant wave equations covariate-adaptive randomization

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