itjetk 发表于 2019-11-22 09:17:56

ASTM B742-90(2012)

ASTM B742-90(2012) Standard Specification for Fine Silver Electrical Contact Fabricated Material


shukesan 发表于 2019-11-22 09:17:57

ASTM B477,539,541,542,576,596,615,617,628,667,693,742,854,878Electrical Contact
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