纵向采用50 KG导轨，四面经精密磨床加工。直线度好。
Longitudinal guides with the level of 50kg by precision grinding have good straightness.
介绍了M5 2120导轨磨床的液压控制系统，该系统具有可靠、稳定、换向平稳等特点。
The hydraulic control system of M52120 guideline grinder was introduced, the hydraulic control system has high reliability, good stability and the ability of alternating directions smoothly.
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