求翻译：主要涉及生产的产品有：各型火车内燃机上用的铝件，各类机车铆工、钣金焊合件等，另主要负责美国GE运输系统高速内燃机车上大型铸件机加工后出口项目。是什么意思？

Mainly related products: all types of internal combustion engine on the train with aluminum parts, various types of locomotives riveter, sheet metal, welding, etc., the other is mainly responsible for the export item after the machining of large castings in high-speed diesel locomotive transport sys

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Relate mainly to the production of the product are: various types of trains on the internal combustion engine with aluminum pieces, various types of locomotive riveters ', sheet metal welding parts, others are primarily responsible for United States GE transportation systems export item after proces