这三个特征分别是：浪漫的自由符号、不完全的重复、趣味的卡通画。
The features are romantic freeness symbol, incomplete repletion and amusing cartoons.
该符号后续的数字表示经过不完全回火后的应变硬化程度。
The number following this designation indicates the degree of strain-hardening remaining after the product has been partially annealed.
该符号后续的数字表示经过不完全回火后的应变硬化程度。
The number following this designation indicates the degree of strain-hardening remaining after the product has been partially annealed.
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