
Reusable rubber contraceptive diaphragms Part 7 : Determination of compression resistance of coil spring and flat spring diaphragms
出版:International Organization for Standardization

專家解讀視頻
Reusable rubber contraceptive diaphragms Part 7 : Determination of compression resistance of coil spring and flat spring diaphragms
出版:International Organization for Standardization
專家解讀視頻