表示等压的

Because the governing equations have the relationship of translation symmetry, the displacement fields and the electrical potential fields can be represented by Bloch theorem to get the periodical structural governing equations.

将应力和电位移场以位移和电位场表示，即可利用层与层间的位移、应力、电位和电位移必须连续等条件求得转换矩阵，再满足上下表面的边界条件即能求得出压电周期叠层板波传频谱。

Policy in an even more sinister light."Confronted with China's rise," writes Fang,"the U.S. has been containing and keeping down China in many areas, such as trade, intellectual-property rights and Taiwan. At the same time, the U.S. is also marketing American values to China … are not the panaceas to China's problems but a cause for us to raise our vigilance."

他表示，面对中国的崛起，美国在经贸关系、知识产权、台湾问题等多个领域遏制打压中国；同时，美国还向中国推销美国价值观……那些不是解决中国问题的灵丹妙药，而是应该引起警惕的理由。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。