Bombyx mori nuclear polyhedrosis virus disease has the most extensive distribution and is the most serious disease in the occurred diseases.
在发生的病毒病为害中，家蚕核型多角体病分布最为广泛，为害最大。
Bombyx mori nuclear polyhedrosis virus disease has the most extensive distribution and is the most serious disease in the occurred diseases.
在发生的病毒病为害中，家蚕核型多角体病分布最为广泛，为害最大。
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