A、<span style="font-size:16px;font-family:宋体">应变元件受压电容变化 </span>
B、<span style="font-size:16px;font-family:宋体">应变元件受压阻值变化</span>
C、<span style="font-size:16px;font-family:宋体">应变元件受压电荷变化 </span>
D、<span style="font-size:16px;font-family:宋体">应变元件受压电流变化</span>