Based on the experimental studies, steel bars’ MFL testing system is developed and mechanical structure and electrical control of the whole testing system are ameliorated.
在实验研究的基础上,开发出钢棒漏磁检测系统,对机械结构设计和电气控制设计分别进行了改进。
参考来源 - 棒材自动无损检测系统的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
到了20世纪20年代，随着大众舞蹈运动的出现，人们聚在一起听钢棒吉他乐。
By the 1920s, with the advent of the public dance movement, people were gathering in large groups to listen to steel guitar music.
然后出现了钢丝弦，接着膝上吉他就诞生了。膝上吉他也被称为钢吉他，因为演奏者会在琴颈上下滑动一个钢棒。
Then came steel strings, and that led to the lap guitar—which is also called the steel guitar because the player slides a steel rod up and down the neck.
这个，有没有必要为不锈钢棒。
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