生产日期可以通过序列码的前两个数字来识别。

The manufacturing date is identified by the first 2 digits of the serial number.

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字符和字符串常数支持标准换码序列。

Character and string constants support the standard escape sequences.

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这里所指的标识包括：图案、文字、序列号、条形码、二维码等等。

The label we say includes design, word, list, bar code and something like this.

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这里所指的标识包括：图案、文字、序列号、条形码、二维码等等。

The label we say includes design, word, list, bar code and something like this.

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