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.
实验结果表明本信号电源工作稳定、频率变化范围大，同时具有良好的动静态性能。
Test results show that the signal power supply has good stability, wide frequency range and good performance.
实验结果表明本信号电源工作稳定、频率变化范围大，同时具有良好的动静态性能。
Test results show that the signal power supply has good stability, wide frequency range and good performance.
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