helical ring 中文意思是什麼
helical ring
解釋
螺旋彈簧-
Wood semi - ring - porous ; vessels solitary with angular outline ; perforation plates reticulate and scalariform ; intervessel pits and vessel - ray pitting alternate ; helical thickenings throughout body of vessel elements
單管孔，散生；整個導管分子上具螺紋加厚。網狀和梯狀穿孔。 -
Wood semi - ring - porous ; vessels solitary with angular outline ; perforation plates scalariform ; intervessel pits and vessel - ray pitting opposite or opposite to scalarifonn ; helical thickenings in vessel elements present
梯狀穿孔板；管間紋孔式為互列；射線導管間紋孔式多對列，類似導管面間紋孔式。 -
The structural design and application for combination between the helical axial seal and floating - ring seal have been performed
實現了螺旋密封與浮環密封相結合的結構設計及應用。 -
4. combination between the helical and floating - ring seal, the practical questions during the production have been solved
把螺旋密封與浮環密封相結合，解決了生產中存在實際問題，取得了很好的應用效果。 -
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
在國內，電子科技大學高功率微波實驗室自70年代後期起，也對迴旋管進行了大量的研究工作，並達到國內外先進水平。
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