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。
Objective:To investigate the surgical approach and indication of total sacrectomy for primary multilevel malignant sacral tumors.
目的：探讨对骶骨多节段恶性肿瘤施行全骶骨切除术的手术入路、手术方式及适应证。
Practical results show that the multilevel comprehensive evaluation approach for key clients is effective and efficient.
对实际数据进行处理的结果表明，该方法能够有效地保证关键客户综合评价的质量和效率。
Practical results show that the multilevel comprehensive evaluation approach for key clients is effective and efficient.
对实际数据进行处理的结果表明，该方法能够有效地保证关键客户综合评价的质量和效率。
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