Slideway grinder processing achieves with difficulty .

和导轨磨床加工难以达到的。

Analysis on representative type ship slideway launching in zhangjiagang branch factory of wuxi shipyard .

无锡船厂张家港分厂典型船舶滑道下水的分析。

Answer : slip even if put the heavy thing on slideway , force of choose and employ persons or windlass involve the operation with bend slip clog .

答：滑就是把重物放在滑道上，用人力或卷扬机牵弓重物滑动的操作。