Indexes of the pulp chamber had higher variance than those of the external morphology.
髓室指标的变异远大于牙体外表指标的变异程度。
The work of the paper studied to replace the current practice of characterizing strand evenness by an internal uneven variance coefficient with a total internal and external one.
本文研究了在电容式条干均匀度仪上把现在的反映内不匀的变异系数，改用反映内外不匀的总变异系数来表征纱条均匀度。
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