因此，对压电桁架结构进行随机分析并评价其可靠性就显得非常有必要。
Therefore, it is necessary to make stochastic analysis of piezoelectric structure and evaluate its reliability.
为了更好的利用其他废弃物，对新的栽培方法和栽培技术的探索，显得非常有必要。
In order to make better use of other wastes of new cultivation method, explore and planting technology, appear very be necessary.
由于合成喷的广泛应用，对它的关键部件：驱动器的输入参数优化显得非常有必要。
Because of synthetic jet's wide application, the study on input parameters' optimization of its key part: actuator is essential.
由于合成喷的广泛应用，对它的关键部件：驱动器的输入参数优化显得非常有必要。
Because of synthetic jet's wide application, the study on input parameters' optimization of its key part: actuator is essential.
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