亚洲人成电影在线播放_日韩一区二区三区免费观看|HD中文字幕在线播放,精品视频在线一区,大乳女被狂揉gif动态图,久99精品久久久

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