可能的几个需要支持的变化是：标签信息改变的频率，文字数量，语言，数据格式，组成标签的静态信息和动态信息等。
There could be several variations to support - frequency of changes to label information, number of words, language, data formatting, mixture of static and dynamic messages that make up a label, etc.
当这种磁场不随着时间而发生变化时它们被称为静态，所具有的频率为0赫兹。
When such fields do not vary with time they are referred to as static and have a frequency of 0 Hz.
研究了在交变磁场作用下磁场频率变化对7050铝合金小型方坯静态成型铸坯熔体的弯液面、显微组织以及元素分布的影响。
The effect of alternating magnetic field frequency on the meniscus, microstructure and element distribution of the static formed ingots of minitype square billet of 7050 aluminium alloy.
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