健身法的特性在于我们取得的健身的改善成果取决于我们健身训练的类型、强度和持续时间。
The fitness law of specificity states that the fitness improvements we garner are specific to the type of exercise (as well as the intensity and duration) we do.
为了使持续时间可比较，XML Schema 1.1 引入了两个新的全序类型，分别是：yearMonthDuration 和 dayTimeDuration，这两种类型由对 duration 的限制派生而来。
To allow durations to be comparable, XML Schema 1.1 introduced two new totally ordered datatypes, namely: yearMonthDuration and dayTimeDuration, derived by restriction from duration.
基于三相自耦变压器和由可控器件IGBT构成的双向开关实现的新型三相vsg，可以方便地控制跌落类型、跌落持续时间、跌落深度和跌落相位。
A novel three-phase VSG is built by three-phase autotransformer and IGBT based bidirectional switch, can easily control the types of voltage sags, sag duration, sag depth and sag phase.
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