Finally a new theory about energy delivering in hollow waveguide is given . in this theory the input attenuation in both straight and bent hollow waveguide 在這一理論體系中,我們得到了空芯光纖的輸入特性和光纖直線(xiàn)狀態(tài)下與彎曲狀態(tài)下的損耗公式。
The calibration of a spectrum analyser normally includes checks on frequency accuracy , level flatness , level linearity , input attenuation and calibration reference output 頻譜分析器的校正工作一般包括檢查頻率準(zhǔn)確度、功率電平不平坦度、標(biāo)度線(xiàn)性、輸入衰減及參考輸出值的校正。