她用那双晶莹明媚的眼睛端详着我。
产生原因可能与其双晶结构有关。
The cause may be related to the twin structure of KTP crystal.
野外鉴定长石时要特别注意双晶的观察。
Field evaluation of feldspar should pay special attention to twin observation.
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。
PC_401 computer system was introduced to the double crystal goniometer for small Angle scattering measurement.
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