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Terms for subject Communications containing heavy duty | all forms | exact matches only | in specified order only
| English | Chinese |
| heavy duty switch machine | 大功率转辙机 |
| neutral relay with heavy duty contact | 无极加强继电器 |
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| English | Chinese |
| heavy duty switch machine | 大功率转辙机 |
| neutral relay with heavy duty contact | 无极加强继电器 |