系统呼叫 system call
系统呼叫机制 SoftWare Interrupt
系统呼叫接口 System call interface
开放系统呼叫 open system call
关闭系统呼叫 close system call
寻觅系统呼叫 seek system call
无链接系统呼叫 unlink system call
无线呼叫系统 Wireless Paging System ; wireless calling system
选择呼叫系统 SELCAL ; SELCAL Selective Calling system ; [通信] selective calling system ; selected calling system
他们用内部通话系统呼叫他。
下一专栏将涉及防范的程式化技巧（用 C），并说明为什麽某些系统呼叫容易出问题以及应如何解决。
The next column covers defensive programming techniques (in C), and explains why certain system calls are problematic and what to do instead.
例如，一种新的系统允许联合收割机向牵引拖车发送呼叫，以便司机可以在必要的时候卸载谷物。
A new system allows a combine harvester, say, to send a call over to a tractor-trailer so the driver can unload the grain as and when necessary.
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