
Reusable rubber contraceptive diaphragms Part 8 : Determination of twisting during compression of coil spring and flat spring diaphragms
出版:International Organization for Standardization

專家解讀視頻
1ED 1985 [15/09/1985]
BS 4028:1966 - Similar
BS 4028:1989 - Equivalent
BS ISO 8009-8:1985 - Identical