实践证明，采用成形切入磨削的加工方法，能够实现无油沟滚道的加工。
Practice has proved that using formation infeed grinding processing method can process raceway without oil groove.
结合瀑布沟大桥工程实际，详细介绍了无塔架缆索吊机的设计方法和无塔架缆索吊装预制横梁及吊杆的安装技术。
Based on the practice of Pubugou Large Bridge, the technology of non-tower cable lifting prefabricated transverse beam and rod installation is introduced in detail.
在兰州市北山采用不同厚度的无纺布覆盖水平沟处理和无覆盖对照处理，在树木生长期内，对土壤水分和刺槐生长指标进行了测定。
Through different thickness non-textile mulch and check treatments, in this paper the water soil content and some growth index of Robinia pseudoacacia during the growth period were studied.
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