整機(jī)采用高級(jí)鑄鐵并經(jīng)過(guò)熱應(yīng)力退火處理,縱向采用精密滾珠鋼導(dǎo)軌,橫向采用貼塑導(dǎo)軌,經(jīng)久耐用,精度保持性好,操作輕便靈活,進(jìn)...