Non-BMP character 非BMP平面字符
This BMP, like all UCS planes, contains 256 rows each of 256 cells, and a character is coded at a cell by just the row and cell octets in the BMP.
像所有ucs平面那样，包含了256行，其中每行包含256个单元，字符仅仅按照BMP中的行和单元的八位元在单元中被编码。
The BMP is used as a two-octet coded character set identified as the UCS-2 form of ISO 10646.
BMP被用作双字节的编码字符集，这种编码字符集确定为ISO 10646 UCS - 2格式。
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