The effects on electric properties of PZT ceramic were investigated, including preheating temperature, frequency, environment temperature and polarization.

研究了粉体预热温度、频率、环境温度等工艺参数及条件对PZT陶瓷电性能的影响。

youdao

High resolution is achieved by measuring motion rather than radio frequency signals as wifi does, and is based on where and how the person moves through an environment over time.

BBC: Technology that works behind closed doors