Taiwan Provincial Standard of the People's Republic of China
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CNS 9941-1986
Scope
This standard specifies the determination of ribbing (1) of optical glass. Note (1): The so-called ribs refer to the rib-like or layer-like optical uneven parts that exist in optical glass.
CNS 9941-1986 history
1986CNS 9941-1986 Method of Test for Striae in Optical Glasses