pullup
n. 引体向上;减速停车;拔起;停下
例句
One of my dreams is to do a one-arm pullup.
我的梦想之一是单手垂挂。
This constant defines the port on which the pullup resistor is connected.
这个常量定义了上拉电阻是连接到哪个口的。
Omit resistor R3 if IC2 includes built-in pullup resistors, as do many modern microcontrollers.
如果IC2包括内置的上拉电阻,就可以忽略电阻r 3,许多现代微处理器都是这样的。