The effects of the forming pressure on the piezoelectric and dielec-tric properties of the composites were investigated. 研究了不同成型压力对水泥基压电复合材料的压电性能及介电性能的影响规律。
Fluctiation in forming pressure during long-time operation is detected and corrected. 对长时间运转时的成型压力变化进行检测,并加以修正。