return shaft 中文意思是什麼
return shaft
解釋
回風豎井-
The third part introduces the design, fabrication, analysis and testing of serveral types of variable optical attenuators. we have designed a micro - machining based voa that consists of an electromagnetically actuated gold - coated silicon mirror rotating around a 100 # am diameter shaft and a miniature driven coul. the voa is capable of fast dynamic response ( < 2ms ), great dynamic range ( 0 ~ 35db ), and low return loss ( < 55db )
論文利用有限元分析軟體ansys對該器件進行工作曲線分析及動態響應分析,分析結果與實測結果接近,實測結果表明,驅動電壓0 8v ,工作范圍0 35db ,動態響應時間為2ms ,插入損耗小於0 . 8db ,回波損耗小於- 50 . 5db 。
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