1) effective order
有效阶数
1.
Research on estimating effective order of radio channel in OFDM systems;
无线OFDM系统中信道冲激响应有效阶数估计
2) second order effective NLO coefficients
二阶有效非线性系数
1.
After analyzing variations of the second order effective NLO coefficients when K is set in one of the other quadrants,we obtain the independent quadrants for both of the uniaxial and biaxial crystals.
从分析二阶有效非线性系数公式入手，针对各类单轴、双轴晶体，讨论了其二阶有效非线性系数在其折射率主轴坐标系八个卦限中的变化情况，给出了相应的对称性结果。
3) effect of the finite order
滤波器阶数有限效应
1.
In view of orthogonality between subcarriers of OFDM system,effect of the finite order of digit shaping filter is discussed in this paper.
从OFDM系统子载波正交性要求出发,讨论了数字成形滤波器阶数有限效应。
4) the third-order effective nonlinear susceptibility
三阶有效非线性系数
5) limited degree number
阶有限数
6) significant order
有义阶数
补充资料：有效位数
对没有小数位且以若干个零结尾的数值,从非零数字最左一位向右数得到的位数减去无效零的个数;对其他十进位的数,从非零数字最左一位向右数而得到的位数就是有效位数.
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