被男人添b超爽视频,日本精品久久久久中文字幕,无码国产精品一区二区免费式直播,日出水了特别黄的视频

Detection&Calibration >> Reference Material >> Minority carrier lifetime Reference Wafer
                

 

    Lifetime Reference Wafer is used to correct the parameters which is used to test the value of Lifetime,and than make it can accurate measure the value of lifetime.

 

    Because the lifetime of surface can decay with time growth,so every Lifetime Reference Wafer has its validity,we must re-Verificate them on time, the Cycle is commonly 5 months.

 

 

?2008-2050 HenergySolar. All rights reserved