work over the beam 中文意思是什麼
work over the beam
解釋
架上操作-
During large power laser beam welding, the surface of the work - piece is melted and gasified, which is ionized and form plasma with the shielding gas on the condition of high temperature over the welded zone
在激光焊接過程中,當被焊材料受到高能激光束作用時,其表面會迅速熔化、氣化,與外加的保護氣體一起在被焊區域的上方電離形成等離子體雲。 -
The main work of this dissertation focuses on the analysis and design theory for a resonator with diffraction optical elements by using a matrix eigenvalue method. the principle and method how to realize a low diffraction beam have been described. both the experimental and theoretical results show that the low diffraction beam has great advantages over the gaussian beam in an ablation - dominated material removal processes
本文的重點是:闡述了利用矩陣本徵值方法分析和設計激光諧振腔的系統理論;簡述了產生和實現低衍射光束的原理和方法,實驗發現了低衍射光束比高斯光束所具有的獨特性能;理論設計和研製了衍射光學元件,並通過實驗獲得空心激光光束,提出了對不同空心光束的描述方法。
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