Both of these PDSs are examples are what I refer to as direct sources; the source supplies the performance data directly.

这两种PDS都是直接源的例子，即可以直接提供性能数据。

youdao

Both of these PDSs are examples are what I refer to as direct sources; the source supplies the performance data directly.

这两种PDS都是直接源的例子，即可以直接提供性能数据。

youdao