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- Abstract: The performance of orthogonal frequency-division multiplexing （OFDM） systems may severely deteriorate when passing through wireless channels with spectral nulls. 文章摘要: 当无线传输信道出现频谱零点，正交频分复用（OFDM）系统会出现严重的性能恶化。
- The state or quality of being null. 无效无效的状况或性质
- The act of making null and void. 废除使 ... 作废和无效
- spectral null 频谱零点
- Signal reconstruction of channel spectral nulls in TDS-OFDM systems TDS-OFDM对信道频谱零点的重建
- The contract was null and void because it was not signed. 这个合同无效，因为它尚未签字。
- The court ruled that the claim was null and void. 法庭裁决此项要求无效。
- The marriage was declared null and void. 婚姻已宣告无效了。
- The null subset corresponds to the term 1. 空集则对应于常数项1。
- A null reference pointer was passed to the stub. 向占位程序传送了空的索引指针。
- The agreement was declared null and void. 这个协议被宣布无效。
- I am studying spectral classification. 我在学习光谱分类。
- Refracting light without spectral color separation. 消色差的，不分光的折射光没有光谱颜色分离的
- A promise obtained by force is legally null. 一个以武力获得的契约在法律上是无效的。
- The operator O is the null operator. 算符O是零算符。
- To separate (light) into spectral rays. 使(光)色散
- Alcor is of magnitude 3.99 and spectral class A5 V. 辅的视星等为3.;99等，光谱类型A5 V。
- A null field descriptor is the descriptor that forms the blank division in export. 一个空白字段描述符是在输出中形成空格的描述符。
- Application of AOTF in Spectral Analysis 1. 首页 >物理学、晶体学 >AOTF在光谱分析中的应用研究 1.
- The column '%.*ls' in table '%.*ls' cannot be null. 表 ''%253!'' 中的列 ''%251!'' 不能为空。
