“black line”的概念、定义、翻译、参考文献-科学参考

单词	black line
释义	black line [`blak ´līn] ^{PLANT PATHOLOGY} A disease of walnuts, especially of English varieties grafted to black walnuts, characterized by a black line of dead tissue at the graft union, eventually leading to death of the tree.
随便看	undersize underspin understory understressing underthrow distortion underthrust undertow undervoltage protection undervoltage relay underwater acoustics underwater burst step attenuator step bearing step block step brazing step-by-step operation step-by-step switch step-by-step system step change step-climb profile step counter step cut step-down transformer step fault step function

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