“summerwood”的概念、定义、翻译、参考文献-科学参考

单词	summerwood
释义	summerwood [`sǝm·ǝr´wu̇d] ^BOTANY The less porous, usually harder portion of an annual ring that forms in the latter part of the growing season.
随便看	Frenkel pair frenulum frenum frequency frequency agility frequency allocation frequency analysis frequency analyzer frequency-azimuth intensity frequency band frequency bridge frequency carrier system frequency changer frequency-changer station frequency characteristic frequency coding frequency compensation frequency conversion frequency converter frequency counter frequency curve frequency cutoff frequency-dependent selection frequency deviation frequency discriminator

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