ISO 2921:1997
Rubber, vulcanized — Determination of low-temperature characteristics — Temperature-retraction procedure (TR test)
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本标准替代了：
Rubber, vulcanized — Determination of low temperature characteristics — Temperature-retraction procedure (TR test)
已被以下标准替代：
Rubber, vulcanized — Determination of low-temperature characteristics — Temperature-retraction procedure (TR test)
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