dutch elm disease 中文意思是什麼
dutch elm disease
解釋
榆樹枯萎病-
Holmes crossed two compatible races of ceratocystis ulmi, the causal agent of dutch elm disease.
霍姆斯曾把荷蘭榆病害的致病因子,長喙殼的兩個親和小種雜交。
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