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The elastic moduli Eijlm represents a tensor of the fourth order. 弹性模数Eijlm表示一个四阶张量。
Concretely,the fourth order squeezing of the light field iis studied in detail. 我们详细研究了量子光场的四阶压缩特性,给出了四阶压缩的条件。
The chain consists of a dual-mode,highly linear,fourth order Chebyshev active RC filter and three VGA stages. 基带由双模的高线性度的四阶切比雪夫形式的有源RC低通滤波器以及三级可变增益放大器构成。
On a keyboard, a row of numeric keys in an ordered sequence. 在键盘上按规定顺序排列的一行数字键。
The scattering of time-domain pulse by the ionosphere was calculated using a fourth order (FD)2TD scheme. 采用具有四阶精度的时域有限差分法计算了电离层对时域脉冲的散射，然后应用小波变换求出了反射信号的时频分布。
On a keyboard,a row of numeric keys in an ordered sequence. 在键盘上按规定顺序排列的一行数字键。
The initial boundary value problem of fourth order wave equation with dispersive and dissipative terms is studied. 摘要研究具色散和耗散项的四阶波动方程的初边值问题。
The concept of depositional accommodation has been applied to sequence genesis analysis and sequence division for continental rift basins with examples from Paleogene,Bohaiwan basin. 以渤海湾盆地下第三系为例，将可容纳空间概念应用于陆相断陷盆地层序成因分析和层序划分。
It reduces the problem of solving double harmonic equation to the problem of solving the fourth order Euler equation by applying transformation. 这种方法是用变换将解重调和方程问题化简为解四阶欧拉方程问题
It is shown that cycle of sedimentary wave is response to each order sequence and the character of high frequency wave is correlated with oil source, reservoir and cap rock. 通过分析沉积波动周期与各级层序持续时间的对应关系，找出了高频沉积波动特征与生储盖之间的对应关系。
On those points of fourth order lead which can not receiver the GPS signal, Leica TC1800 was used and achieved precision requirement. 在无法接收GPS信号的四等导线点按照常规方法利用TC1800测量，达到设计精度要求。
You will notice that the odd numbered weeks and the even numbered weeks instruct the same order sequence for each exercise, but that the actual days of the week are different. 你将会奇数的有限数个星期而且平坦的有限星期为每种练习教相同的次序序列,要不是星期的真实数天是不同的。
This paper considers the finite difference method for a class of generalized fourth order dispersive and dissipative wave equation. 摘要研究了一类四阶非线性耗散、色散波动方程初边值问题的有限差分解法。
We also extrapolate the expansion arid enhance the accuracy of the eigenvalue from the second order to the fourth order. 然后对误差展开式外推，收敛阶数可以从二阶提高到四阶，得到了高精度的解。
Using the fourth order Runge-Kutta method, the equation of disorderly coupled pendulums with different simple pendulums is calculated. 摘要利用龙格-库塔法求解了不同单摆构成的耦合摆的运动方程，分析了由两个不同质量的小球组合的耦合摆的运动情况；
high-resolution sequence division 高分辨率层序划分
Sequence division multiple access 顺序分配多路存取
With flexible definition of fourth order cumulant of the array output signal, the spectral peak searching is not necessary for the new separable approach. 通过巧妙定义阵列输出四阶累积量矩阵,该方法不需要谱峰搜索就可以估计信号二维到达方向。
sequence division modulation telemetry 序列分割调制遥测
Focused on the asymptotic behaviour of mediant for fourth order Lagrange's mean value theorem and obtained the main results as followed (The equation is abbreviated). 摘要对四阶拉格朗日中值定理中间点的渐近性质进行了研究，得到的主要结果是(方程式略)。