Last Updated：2025/11/22
Engineers compared the performance characteristics of several 4-8-4+4-8-4s during the testing phase.
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Engineers compared the performance characteristics of several 4-8-4+4-8-4s during the testing phase.
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技術者たちは試験段階で、いくつかの連結した4-8-4形機関車の性能特性を比較した。
