清纯唯美激情 I 美腿制服丝袜国产亚洲 I 性视频播放免费视频 I 19禁无遮挡啪啪无码网站 I 免费一级特黄特色的毛片 I 黄色影视免费看 I 二区三区精品 I 国产乱妇乱子在线视频 I 精品久久成人 I 亚洲综合色婷婷在线观看 I 中国特黄毛片 I 99久热在线精品视频观看 I 人妻丝袜中文无码av影音先锋专区 I 国产一线二线三线女 I 在线少妇 I 日韩黄色成人 I 啪啪午夜免费 I 久热一区 I 两性午夜视频 I 国产偷人视频免费 I 亚洲国产综合精品2020 I 欧美日韩视频精品 I 国产欧美日韩免费 I 亚洲乱轮 I 18禁止观看强奷免费国产大片 I 97超碰在 I 色爱av综合网 I 国产在线公开视频 I 精品一区二区不卡 I 天堂国产+人+综合+亚洲欧美 I 男女爱爱福利视频 I 免费福利片在线观看 I 色吊丝中文av I 日本黑人理伦b片 I 欧美做爰全过程免费观看

Mechanical characteristics：
★Taken the machine adopts advanced cast iron castings, mainly by the annealing treatment and vibration aging treatment, removal of internal stress, casting stability is greatly increased, out of shape not easily;
★Taken to improve the work efficiency, the company a stable machine taste thick material bed, body, meet the heavy cutting and fine grinding machine rigid demand;
★Guide rails are advanced import business resistant rubber, the artificial precision shovel flower, to ensure the accuracy of persistent;
★X, Y plane all the accuracy within 0.02 mm;
★Spindle swing arm end of 0.003 mm;
★The Y axis adopt grinding precision ball screw, lighter, more accurate, more durable;
★The Z axis adopts the T type nut screw (copper nut for phosphor bronze);
★Hydraulic system main components were designed, low vibration, low;
★Reasonable cable line design, twist and not burn;
★Lubricating oil way boot self-checking, fault, and adopts the automatic cycle, equipped with pressure sensors, ensure guide rail no shortage of oil;