This article divides the Erhu timbre into the absolute timbre and the relative timbre, the absolute timbre dependence concrete, the change relative timbre presents.
本文把二胡音色划分为绝对音色和相对音色，绝对音色依靠具体的、变化的相对音色来呈现。
It solved the problems of no evidence and experience dependence construction in installation and backout of formwork-supporting system for multilayer concrete structures.
解决了多层砼结构模板支撑系统的安装及拆除无依据、凭经验施工的问题。
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