double-groove

基本解释

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.
文章论述了在设计中采用钢屋架下弦两节点下悬吊双槽钢作为分布梁避免钢屋架下弦拉弯工作。
This product require full penetration, double groove,back gouged after welding,and follow the welding sequence.
本产品要求全焊透，开设双面坡口，正面焊妥后背面碳刨清根后按顺序施焊；
double groove continuous extruding machine
双槽连续挤压机
He is working double tides to finish his essay.
他日夜苦干，赶写他的文章。
Development for Grindering Double Groove Raceways Equipment Used Single GrooveRaceway Grinder With Mounting and Clamping workpiece at One Time
单沟道磨床一次装夹工件磨削双沟道