橡胶缓冲器

花瓶下部有一个换水用的小排水口，并用橡胶塞塞住。

PVSI；Methylsilicone Rubber with Phenyl and Vinyl Group(ASTM)

(1) treatment of RUBBER in general and of natural and synthetic

neoprene synthetic rubber【橡胶】

cis-1,4-polybutadiene rubber

anti-vaccum rubber

hydrocyclo-rubber

butadiene-styrene-vinylpyridine rubber

averaging of rubber