In this article the authors consider Riemann problem for linear hyperbolic systems with discontinuous coefficients, and show that it maybe admit measure solution containedδwave.
考虑具间断系数线性双曲型方程组Riemann问题,利用分析的方法证明了该问题包含δ波解的存在性。
The optical tomography of tissues by a δ sound field;
基于δ声波场的生物组织光学断层成像研究
As the viscosity coefficient tends toward zero,the ω * limit in L 1of the solution is the δ-shock wave for the hyperbolic system.
当粘性系数趋于零时，这个解在Ｌ１意义下的ω＊极限是该双曲方程组的δ－激
We draw the conclusion that it is possible for the generalized solutions of this system to contain δ-shock wave when λ > 0, and if λ < O, No δ- shock wave exists in solutions, however there probably exist unbounded solutions in LP(1 < p < λ-1).
我们发现当λ＞0时，该系统的解可能含有δ-激波。
Your brain will show the large slow waves that are known as the delta rhythm.
这时你的脑波将呈现出大而缓慢的波形，我们称之为δ波。
Design and optimization of an over-sampling digital filter for Σ-Δ DAC
用于Σ-Δ DAC的插值滤波器设计与优化
Design of decimation filter of ∑-Δ microgravity accelerometers
∑—Δ微加速度计的抽取滤波器设计
For nondegenerate(δ)levels, there is no element of choice in the wave function.
对非简并的（δ）能级，波函数没有选择的余地。
Decimation Filter Design in Sigma-delta ADC
Δ∑模数转换器中数字抽取滤波器的设计
Design of a Reconstruction Filter in Σ-Δ Digital Analog Converter
用于Σ-Δ数模转换器的重构滤波器的设计
Design and Optimization of Decimation Filter in Σ-Δ A/D Converter
Σ-Δ A/D转换器中抽样滤波器的设计和优化
The Applications of δ Function in Electromagnetic Field and Wave
δ函数在“电磁场与电磁波”课程中的应用
That is, they will increase from delta to theta and then to alpha and finally, when the alarm goes off, into beta.
即将从δ脑电波至θ脑电波、α脑电波，最后当人们完全清醒时为β脑电波。
Influences of Device Velocity on Signal Frequency Spectrum in Wideband Σ-Δ Waveform Generator
宽带Σ-Δ波形产生器中器件速率对信号频谱的影响
In summary, there are four brainwave states that range from the high amplitude, low frequency delta to the low amplitude, high frequency beta.
总之，在高振幅、低频率的δ脑电波到低振幅、高频率的β脑电波间，共存在着四种脑电波。
δ-hollow module and δ-(P~*) condition
δ-hollow模和δ-(P~*)条件
When the delta brainwave frequencies increase into the frequency of theta brainwaves, active dreaming takes place and often becomes more experiential to the person.
当δ脑电波的频率升至θ波频率范围时，人们开始做梦，梦常常是根据个人经验产生的。
-free gsm mapping
ε无关ｇｓｍ映射 δ
Fabrication of the GdBa_2Cu_3O_(7-d) Bulk Superconductor;
GdBa_2Cu_3O_（7-δ）超导体的研制
A Lebesgue Decomposition of a (δ)Set-valued Measure
(δ)集值测度的Lebesgue分解
The δ-structure and τ-structure on quantales
Quantale上的δ结构和τ结构
An Approximate δ-Continuity of Fuzzy Multifunctions;
LF下几乎强δ-与上几乎强δ-连续多值映射
