在所有平台上，支持称为双字节字符集(DBCS)的多字节字符集(MBCS)形式。

Support for a form of multibyte character set (MBCS) called double-byte character set (DBCS) on all platforms.

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UCS是ISO 10646标准定义的所有已知字符集编码的多字节(31位)超集。

UCS is the multibyte (31-bit) superset of all known set encodings defined by the ISO 10646 standard.

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首先，它可以从面向字节的代码集编码单字节字符，其次，当在数组中使用时，它可以从多字节字符集(如unicode)，编码任何多字节字符。

First, it can encode a single byte character from any byte-oriented code set, and second, when used in an array, it can encode any multi-byte character from a multi-byte character set such as Unicode.

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