The point groups of the crystals at room temperature were determined by means of X-ray diffraction and ferroelectric measurement.
根据x光衍射及铁电测量，确定了在室温时晶体的点群。
The long-term free relaxation effects found in ferroelectric ceramics appear also in single crystals.
在铁电陶瓷中发现的长时间自由弛豫效应也出现于单晶体中。
The lead based relaxor ferroelectric single crystals have received increasing attention for their potential application in many fields.
铅基弛豫型铁电单晶由于其具有潜在的巨大商业和军用价值日益受到了人们的重视。
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