远程过程调用和Web服务有什么区别？(What is the difference between remote procedure call and web service)

 有关RPC和Web Service的明确定义？ 快速维基百科搜索显示： 
 
 
 
 RPC：远程过程调用（RPC）是一种进程间通信技术，允许计算机程序使子程序或过程在另一个地址空间（通常在共享网络上的另一台计算机上）执行，而无需程序员明确编码这个远程交互。 
 
 
 Web服务：Web服务通常是通过超文本传输​​协议访问并在托管所请求的服务的远程系统上执行的应用程序编程接口（API）或Web API。 Web服务往往属于两大阵营之一：Big Web Services [1]和RESTful Web Services。 
 
 
 我不太清楚两件事情之间的真正区别。 似乎有一件事可以属于RPC，同时也是一种Web服务。 
 
 Web Service是RPC的更高层次的代表？ 

Is there any clear definition of RPC and Web Service? A quick wikipedia search shows:
 
 
 
RPC: Remote procedure call (RPC) is an Inter-process communication technology that allows a computer program to cause a subroutine or procedure to execute in another address space (commonly on another computer on a shared network) without the programmer explicitly coding the details for this remote interaction. 
 
 
Web Service: Web services are typically application programming interfaces (API) or web APIs that are accessed via Hypertext Transfer Protocol and executed on a remote system hosting the requested services. Web services tend to fall into one of two camps: Big Web Services[1] and RESTful Web Services.
 
 
I am not quite clear what the real difference between the two things. It seems that one thing could belong to RPC and is kind of web service at the same time.
 
Is Web Service a higher level representation of RPC? 

原文：https://stackoverflow.com/questions/3028899