Abstract: The paper has introduced the building technology of the replacement of compensation device and the contact wire in the course of the existing railway-speed-increasing catenary device rebuilding, as a reference to the builder.是什么意思_Abstract: The paper has introduced the building technology of the replacement of compensation device and the contact wire in the course of the existing railway-speed-increasing catenary device rebuilding, as a reference to the builder.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句