NF S86-622-1977 钟表业.电子表.表壳和操作按钮的连接尺寸
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NF S86-622-1977 钟表业。电子表。表壳和操作按钮的连接尺寸
Horology. Electronic watches. Dimensions for connecting the case and the push-button.
Horology. Electronic watches. Dimensions for connecting the case and the push-button.
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