<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><div>Dear users,<br>I don't understand clearly, Internal shad factor and External shad factor, in the definition the caractéristique of window. Does anyone could tell me the details?<br>best regards<br><br>TAO Yujun<br></div></div><br>
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