The machinery consists of an ultrasonic extracting tank as the main body and supplementary units.

本套设备以超声波提取罐为主体，配备辅助系统组成。

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Counting code units using either CODEUNITS16 or CODEUNITS32 gives the same answer, unless supplementary characters or a surrogate pair is involved.

使用CODEUNITS16或CODEUNITS32计算代码单元得到的结果是相同的，除非使用了增补字符和代理对。

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When supplementary characters are involved, a supplementary is counted as two UTF-16 code units using CODEUNITS16, or one UTF-32 code unit using CODEUNITS32.

使用增补字符时，对于一个增补字符，使用 CODEUNITS16 计算是两个 UTF-16 代码单元，而使用 CODEUNITS32 计算则是一个 UTF-32 代码单元。

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