谁帮我看下这段 英文有没有语法错误

The Reconstructive Schemes Of Retarder Equipments In Existence Marshalling Yard To Adapt Over Loading Transportation
Abstract: This text aims at the alteration problem for speed control equipments of existence marshalling yard, in order to adapt the big circumstance of over loading transportation in our country. The survey of current Marshalling Yard and the demand adapting 23T heavy-truck in existence speed control equipments at marshalling station is also analyzed. Meanwhile, the advantages and disadvantages of retrofit mode are given. Features of the high-burthen speed control equipments which are in order to adapt the needs of over loading transportation in our country, then present applying status of the High-burthen speed control equipments at home and abroad is produced. finally, Definitude the important status and function of High-burthen speed control equipments series in existence marshalling yard.
Key words：Over Loading; In Existence Marshalling Yard; Speed Control

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