声波吹灰器通过将压缩空气或蒸汽转换为高强度声波，利用声波振动使积灰因疲劳效应疏松脱落，最终被气流或重力清除
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引言你是否曾经疑惑，增额定期寿险在保障期间内能否取出资金？这个问题困扰着许多保险购买者。本文将为你揭晓答案，并深入探讨增额定期寿险的相关知识，帮助你做出明智的保险决策。增额定期寿险是什么增额定期寿险是
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