double groove

基本解釋

The utility model is composed of a post, a guide rail, a movable rod, a traction rope, a support rope, a double groove pulley, a button, etc.
該裝置由柱樁、導軌、活動桿、牽引繩、支撐繩、雙槽滑輪、按鈕等組成。
ip.com
The double groove steel is suspended under the two nodes of bottom chord of steel roof truss to prevent the bottom chord from stretch bending.
文章論述了在設計中採用鋼屋架下弦兩節(jié)點下懸吊雙槽鋼作爲分佈梁避免鋼屋架下弦拉彎工作。
So this paper is related to the study of basic forming principles of cold rolling for double groove ball bearing outer rings from theory, numerical simulation and experiment.
本文以雙溝軸承外圈爲研究對象，從理論、數值模擬和實騐角度對雙溝軸承套圈冷輾擴成型基本槼律進行了深入研究。