Many programs utilize Boolean expressions, and Python provides the full range of Boolean comparison and logical operations, as detailed in tables 1 and 2, respectively.
很多程序利用布尔表达式，Python 提供一整套布尔比较和逻辑运算，详细信息请分别参见表 1 和表 2。
Comparison between attribute expressions without identical syntax structures is permitted to gain an insight into the relationships of all kinds of authorization rules.
具有不同语法结构的属性表达式也可以比较，以发现不同授权规则间可能存在的关系。
Kinetics characteristics and its expressions were (obtained). Comparison of calculated values with experiment values showed that kinetics expression precision was good.
研究结果表明，所得的动力学表达式的计算值与实验结果吻合较好，反映了粉煤灰与氢氧化钙的火山灰反应的规律。
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