使用合适的功率放大器驱动激励线圈，是实现基于磁致伸缩效应无损检测技术的关键环节。
It is important to apply a suitable power amplifier to drive the transmitting coil in magnetostrictive nondestructive testing (NDT).
对此本文提出了利用缺陷的回波信息调整后续驱动器激励信号强度，从而达到缺陷处等强度效果的可控强度激发技术。
The technology which can control the transducer's driving strength according to the message of Echo is proposed in this paper.
对此本文提出了利用缺陷的回波信息调整后续驱动器激励信号强度，从而达到缺陷处等强度效果的可控强度激发技术。
The technology which can control the transducer's driving strength according to the message of Echo is proposed in this paper.
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