链动滑轮，吊车专用电动滑板，吊车专用手动滑板，悬臂起重机，铁路养路器械。

Chain blocks, crane - use electrical saddles, crane - use manual saddles, jib cranes, railroad maintenance equipment.

文章介绍了有关在广州-茂名铁路运用大型养路机械进行更换石碴施工的技术和经验。

The large track maintenance machines were used in the railway engineering construction of replacement for ballast on the Guangzhou-Maoming railway line.