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单词 black ring
释义

black ring

noun

variants or less commonly black ring spot
1
: a virus disease of cabbage and other members of the cabbage family (Cruciferae) that is characterized by necrotic, dark, and often sunken rings on the leaf surface
2
: a virus disease of the tomato that is characterized in its initial stage by numerous small black rings on young leaves
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更新时间:2025/3/16 4:37:51