2) immersion beam focus technique
非调质D级抽油杆用钢
1.
An experimental immersion beam focus technique has been developed to measure relative phase velocity of ultrasonic waves through three kinds of non-quenched and tempered 30Mn2SiV Steel for Sucker rod with different mixed microstructure.
本文以某公司经控轧控冷工艺生产的非调质D级抽油杆用钢30Mn2SiV为对象,利用超声波水浸线聚焦检测技术,借助频谱分析方法,采用计算相位谱的偏离程度获得相速度值的方法,以相速度为无损表征参量,研究了具有不同珠光体含量和形态的粒状珠光体+片状珠光体+铁素体、片状珠光体+铁素体以及上贝氏体+片状珠光体+铁素体三类样品复杂组织状态与相对相速度之间的关系。
3) hot rolled round bar used for oil extraction rod
抽油杆用热轧圆钢
4) continuous steel sucker rod
钢制抽油杆
5) 20CrMoA sucker rod
20CrMoA抽油杆钢
1.
Development of 20CrMoA sucker rod by converter-continuous rolling route;
转炉——连轧开发生产20CrMoA抽油杆钢
6) fiberglass-steel sucker rod
玻璃钢-钢抽油杆
补充资料：抽抽趔趔
1.犹言别别扭扭。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条