A. N. s. I. standard b2.4-this standard controls NIBCO hose coupling screw threads.
标准B2.4 -这个标准控制美国尼必可软管连接螺丝螺纹。
In the second chapter, the interaction among a screw dislocation, circular interfacial crack and inclusion is solved based on the electromechanical coupling relation of piezoelectric material.
第二章基于压电材料的机电耦合关系求解螺型位错、圆形界面裂纹与夹杂之间相互作用的问题。
New technology and new construction, such as hydraulic coupling, dismountable scraper chain, pneumatic discharge gate valve and screw tensioning device with multi-spring buffer are used.
它采用液力偶合器、可拆式刮板链条、气动卸料闸门以及多弹簧缓冲的螺旋张紧装置等新技术、新结构。
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