From the point of view of relative level, this paper proposes a novel approach for the multilevel compression in Walsh code-division multiplexing digital communication.
本文从相对电平的观点出发，提出了一种沃尔什码分多路信号多电平压缩的新方法。
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The multilevel control approach is a two-stage controller design.
多级控制是一种两步控制器设计方法。
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Objective:To investigate the surgical approach and indication of total sacrectomy for primary multilevel malignant sacral tumors.