system identifier

基本解释

getSystemId() returns the system identifier for the current document event.
getSystemId() 返回当前文档事件的系统标识。
The value "TTTTSSSSS" means that the model number and plant of manufacture are not required to generate a unique system identifier.
值“TTTTSSSSS”表示不需要型号号码和生产厂家来生成唯一系统标识符。
After doing so, search results will show both types of identifier, with the file system identifier obviously occurring in every case that an XPath in its namespace does.
这样做之后，搜索结果将显示标识的两种类型，很明显，在每次 XPath 在其名称空间中出现的场合中，文件系统标识都出现。

Coupled with a unique identifier from DTCC, the system will allow a corporate actions user to track an event from instruction through payment.
FORBES: Is SWIFT Lagging On Corporate Actions Or Serving Its Global Membership?
Developers have contacted The Next Web to share references to a new iPhone identifier and the next big operating system update for the smartphone and tablet devices: iOS 7.
FORBES: Links 2 Jan: Apple's iPhone 6 And iOS7 Already Showing Up