The frequency area of big caliber vertex flow transducer is small, frequency unitofflow is very big, the change of ration meter display is very large what confine its wide use.
To create a map of topics for a learning module, we selected the topics we wanted in the unit, and then placed topics in the order we wanted them to flow.
在创建学习模块的主题映射时，我们选择希望包含在单元中的主题，然后按照需要的顺序排列主题。
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In this section, the author of the investigative unit s Village's basic situation, the population flowof the current situation of the detailed description and a more detailed analysis.