The degree of infectivity varies in its location, i.e.base, middle and top of the midvein.
The degree of infectivity varies in its location, i.e.base, middle and top of the midvein.
中脉的不同部位(基部、中部和顶部)病菌侵染的程度有明显不同。
The degree of infectivity varies in its location, i.e.base, middle and top of the midvein.
中脉的不同部位(基部、中部和顶部)病菌侵染的程度有明显不同。