1) quaternary LFM(Linear Frequency Modulation)
M元LFM
2) M-ary
M元
1.
Study on the wavelet packet based M-ary multicarrier spread spectrum system;
基于小波包的M元多载波扩频系统研究
2.
The algorithm can achieve BPSK DSSS in the in-phase branch based on the code phase,and the M-ary modulation in the orthogonal branch based on code polority.
该算法利用扩频码码极性特点在同相支路上进行BPSK调制的直接序列扩频传输,利用扩频码码相位特点在正交支路进行M元扩频传输。
3) M-A constituent
M-A组元
1.
Effects of M-A constituent on toughness of coarse grain heat-affected zone in HSLA steels for oil tanks
M-A组元对石油储罐用钢粗晶热影响区韧性的影响
2.
The experimental results showed that M-A constituents mainiy distributed at prior austenite grain boundaries at second peak temperature of 780 ℃, large particle M-A constituent and fine grain bainitic zone were formed at prior austenite grain boundaries at 840 ℃, and M-.
结果表明,二次峰值温度为780℃时,M-A组元在原奥氏体晶界成链状分布;二次峰值温度为840℃时,原粗晶区晶界位置生成了细晶贝氏体带,及大颗粒的M-A组元;二次峰值温度为900℃时,M-A组元弥散分布,原粗晶区的奥氏体晶界消失。
4) M-A constituents
M-A组元
1.
M-A constituents in local brittle zones of pipeline steel;
管线钢焊接局部脆化区的M-A组元
2.
The refining effect of the second phase particles CaO on γ grain boundary of coarse grain heat affected zone(CGHAZ) and the effect of M-A constituents in microstructure of CGHAZ on toughness were investigated.
分别研究了微钙C-Mn钢中分布的弥散的热稳定的第二相CaO粒子对焊接热影响粗晶区(CGHAZ)奥氏体晶粒的细化效果和CGHAZ显微组织中的M-A组元对冲击韧性的影响。
3.
The granularity and M-A constituents were etched by Lepera reagent.
用Lepera着色腐蚀剂腐蚀粒状贝氏体中的M-A组元,观察和研究了不同t8/5的热模拟条件下粒状贝氏体中M-A组元的形态、数量及分布特征。
5) M/A constituent
M/A组元
6) M-ary spread spectrum
M元扩频
1.
Performance analysis of a OCC M-ary spread spectrum system in Rician slow fading channel;
Rician慢衰落信道下的正交循环码M元扩频系统性能分析
2.
Performance analysis of an M-ary spread spectrum receiver using biorthogonal cyclic codes;
一种双正交循环码M元扩频接收机性能分析
3.
A differential detection method is proposed for M-ary spread spectrum signal process.
提出了一种M元扩频信号的差分检测方法,发端将输入的串行数据转换为并行数据,然后进行M元差分编码、M元扩频编码和载波调制。
补充资料：春日书情寄元校书伯和相国元子
【诗文】：
数岁平津邸，诸生出门时。羁孤力行早，疏贱托身迟。
芳草看无厌，青山到未期。贫居悲老大，春日上茅茨。
卫玠琼瑶色，玄成鼎鼐姿。友朋汉相府，兄弟谢家诗。
律合声虽应，劳歌调自悲。流年不可住，惆怅镜中丝。
【注释】：
【出处】：
全唐诗：卷269_2
数岁平津邸，诸生出门时。羁孤力行早，疏贱托身迟。
芳草看无厌，青山到未期。贫居悲老大，春日上茅茨。
卫玠琼瑶色，玄成鼎鼐姿。友朋汉相府，兄弟谢家诗。
律合声虽应，劳歌调自悲。流年不可住，惆怅镜中丝。
【注释】：
【出处】：
全唐诗：卷269_2
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条