The pesticidal and bactericidal effects of ginkgolic acid extracted from Ginkgo exocarp was studied.从银杏外种皮中提取的银杏酚酸和白果酚有杀虫、杀菌作用.The change of fruit anatomical structure shows cell of exocarp, sarcocarp and endocarp divisi...
This microscope magnifies 40 diameters.这台显微镜能放大40倍.This version of the Digges telescope magnifies images 11 times.这种型号的迪格斯望远镜可将图像放大11倍。This version of the Digges telescope magnifies images 11 times...这种型号的迪格斯望远镜可将图像放大11倍...