Well, using, again, the double Angle formula.
再次利用二倍角公式。
PC_401 computer system was introduced to the double crystal goniometer for small Angle scattering measurement.
对双晶衍射仪实行改造，用一台PC _ 401微机直接控制和进行小角散射等测量。
PC_401 computer system was introduced to the double crystal goniometer for small Angle scattering measurement.
对双晶衍射仪实行改造，用一台PC _ 401微机直接控制和进行小角散射等测量。
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