The core mass of single-phase and three-phase distribution transformers with wound core is analyzed and calculated. The examples are given.
对单相、三相卷铁心配电变压器的铁心质量进行了分析和计算，并给出了实例。
The seal is provided by the combination of a peripheral groove in an outer surface of the check valve and a helically wound core in the groove.
通过组合所述止回阀的一外表面中的一周边槽与所述槽中的一螺旋缠绕芯来提供所述封垫。
The seal is provided by the combination of a peripheral groove in an outer surface of the check valve and a helically wound core in the groove.
通过组合所述止回阀的一外表面中的一周边槽与所述槽中的一螺旋缠绕芯来提供所述封垫。
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