另一个应用程序或系统对适配器进行的Web服务调用。
A Web services call to the Adapter made by another application or system.
操作系统将调用这些服务，而不是直接地操作硬件。
The operation system calls these services rather than manipulating hardware directly.
远程过程调用：两个系统都暴露另一个能调用的服务。
Remote Procedure Call: each of two systems expose services that the other can call.
远程过程调用：两个系统都暴露另一个能调用的服务。
Remote Procedure Call: each of two systems expose services that the other can call.
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