super-strength steel

基本解释

According to the features of D406A super-high strength steel, five twist drills of different cutting tool material are selected to carry out the drilling tests.
文摘针对D406A超高强度钢的性能特点，选用了五种麻花钻进行钻削试验。
The properties, process engineering and technical-economic indexes of body yield round steel bolt, high strength twist steel bolt and super high-strength twist steel bolt are introduced.
介绍了圆钢杆体可伸长锚杆、螺纹钢高强度锚杆、螺纹钢超高强度锚杆的特性、加工工艺及技术经济分析。
The design that super-strength steel of "D6A " and large length-diameter ratio and welding fabrication after being machined in segments are adopted in the overall design of the bomb shape.
总体设计采用超高强度钢D6A 材料和大长径比的结构设计，分段加工后进行焊接成型。