double byte

基本解释

It gives double the LENGTH function value if double-byte data type is used as input.
如果使用双字节数据类型作为输入，它就会给出双倍的 LENGTH 函数值。
In a DBCS encoding, certain values are reserved to indicate that they are part of a double-byte character.
在DBCS编码模式中，一些特定的值被保留用来表明他们是双字节字符的一部分。
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Due to the complexity and high number of the characters of some languages such as Chinese and Japanese, these character sets use double-byte and mixed character sets.
由于诸如中文和日语等一些语言字符的复杂性和繁多，这些字符集就使用双字节和混合型字符集。