In a loop, a guard can have two special conditions tested against in addition to the standard Boolean test.

在一个循环中，除了标准的布尔测试外，一个约束能测试二个特定的条件式。

youdao

As shown in Figure 2-9, the guard buffer significantly reduces the charging time of CSHUNT because of the open-loop gain (AGUARD), which is typically 104 to 106.

如图2 - 9所示，由于保护缓冲放大器具有典型值为104到106的开环增益，所以能够大大减少CSHUNT的充电时间。

youdao

The operator of the combined fragment is 'loop' and the guard represents the condition to control the repetition.

联合片段的操作者（operator）是’loop’，警戒条件代表控制重复的条件。

youdao