From 1997 to 1999,a survey of chestnut pests was carried out in Zunhua,Xinglong and Qianxi counties (or city) of Hebei Province.
英
美
1999年,在河北省燕山板栗产区的遵化、兴隆、迁西等县(市)进行了板栗害虫的调查。
目录
查词历史
英 汉