helical ring meaning in English
螺旋弹簧
Examples
- Interiorly , the uestc high power microwave laboratory has studied gyrotron since the late 1970s and reach advanced level internationally . magnetron injection gun ( mig ) provides the helical ring beam
在国内,电子科技大学高功率微波实验室自70年代后期起,也对回旋管进行了大量的研究工作,并达到国内外先进水平。