这样，使用无阻塞I/O的应用程序无须轮询设备是否可访问，而阻塞访问也可以被类似“中断”的异步通知所取代。

So, use no block I/O application without access to the equipment is polling, and block access can be similar to "break" replaced the asynchronous notification.

youdao

这样，使用无阻塞I/O的应用程序无须轮询设备是否可访问，而阻塞访问也可以被类似“中断”的异步通知所取代。

So, use no block I/O application without access to the equipment is polling, and block access can be similar to "break" replaced the asynchronous notification.

youdao