A new ultrasonic honing device which is used to hone long precision holes of high-strength steel is designed and manufactured and honing experiment research is done in this paper.
针对高强度钢精密深孔加工中存在的难题，研制了一套超声珩磨装置并进行了试验研究。
On the safe steps in the process of large span steel honing frame whole lifting;
本文主要介绍大跨度钢管桁架的现场拼装和整体提升的施工技术措施。
On the safe steps in the process of large span steel honing frame whole lifting;
本文主要介绍大跨度钢管桁架的现场拼装和整体提升的施工技术措施。
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