picometer

1. The measurement of piezoelectric properties on commercial PZT bulk indicated that the introduction of lock-in technique, which offered excellent noise rejection, raised the displacement resolution up to picometer order.
   对商用压电陶瓷在小信号激励下的压电性能测试表明，数字锁相技术的引入能有效抑制系统噪声，并提高激光多普勒系统的位移检测分辨率，使其达到皮米量级。
2. Picometer measurement technique and instrument
   皮米测量技术及仪器

noun

1. a metric unit of length equal to one trillionth of a meter

   Synonym:    picometremicromicron