All field cases with rivet type pole shoes must be inspected for rust and brush length.

所有带铆钉式极靴的中体必须检查是否生锈和炭刷的长度。

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All field cases with rivet type pole shoes must be inspected for rust and brush length.

所有带铆钉式极靴的中体必须检查是否生锈和炭刷的长度。

youdao