多层

"Dagwood, also Dagwood:a multilayered sandwich with a variety of fillings."

多层三明治：有各种各样的馅的多层三明治。

The periodic thickness and structure of the multilayer are measured by X-ray diffractometer.

利用X射线衍射仪测量了多层膜结构，在德国Bessy Ⅱ同步辐射上测量了在工作波长处多层膜反射率，测量的峰值反射率达7.5％。

EC 24. Lead in solders for the soldering to machined through hole discoidal and planar array ceramic multilayer capacitors.

通过盘状及平面陈列陶瓷多层电容器的焊料所含的铅；通过盘状及平面陈列陶瓷多层电容器的焊料所含的铅

Single detector and coincidence Doppler broadening measurements using slow positron beam were carried out to study Ti/Al multilayer films. The main goal is to study the evolution of vacancy-type defects and inter-diffusion of elements in films subjected to different annealing conditions.

4符合多普勒展宽测量结合慢正电子束流研究了磁控溅射方法制备的Ti/Al多层膜，分析讨论了多层膜缺陷结构的热稳定性，实验结果表明，随退火温度的升高，点缺陷结构经历了迁移、聚集长大最后崩塌回复过程。

Magnetic properties of Cu/Co multilayer films obtained by the method of pulse electrodeposition were investigated.

采用电化学方法制备的铜钴纳米多层膜的磁学性能与其它方法制备的纳米多层膜有相似的性能。

Combining NA samples the EB estimation with convergence rates is also obtained; Thirdly, for one-parameter exponential distribution family, we give the parameters' EB estimator that is admissible and asymptotically optimal with convergence rates. Finally, Bayesian and hierarchical Bayesian approaches are applied to analyze the reliability performances for series system with cold standby units and the numerical simulation results show that multiple Bayes estimator is superior to Bayes estimator.

其次，针对一类双边截断分布族，在非对称linex损失下构造了经验Bayes决策函数，建立了它的收敛速度，给出了渐近最优的证明；并结合NA样本研究了参数的经验Bayes估计及其收敛速度；接着给出了指数族参数的经验Bayes估计，证明了它是渐近最优的，也是可容许的，同时也获得了该EB估计的收敛速度；最后，运用Bayes与多层Bayes方法研究了具有冷贮备部件串联系统的可靠性指标的估计，并给出了数值模拟结果，结果表明多层Bayes估计优于Bayes估计。

To overcome the above problems,authors present a Hierarchical algorithm based on Communication range Restraining Clustering.It first studies single-level protocol based on Communication range Restraining Clustering and then father node is selected in every layer in terms of communication range restraining to reduce the number of data package transmission.

针对这种问题，提出了一种基于通信范围约束的多层簇类算法，基于单层次的数据融合结构，给出了多层次的数据融合，然后对每一层簇头通过通信范围选择父节点，减少数据包传输次数。

The model of multi-layers dense media is developed for numerical simulation of polarized brightness temperature from layering lunar soil and rock. Numerical simulations show the functional dependence of relevant physical parameters.

提出模拟的亮温和多层月壤月岩的多层密集粒子介质辐射传输模型为理论观测，反演月球表面参数，讨论了月壤厚度等参数反演可予以实施的方法。

In this dissertation, the structure of MFNN and a training algorithm which can be easily implemented in hardware for a class of neural networks with general topology, are studied. Furthermore, the application of the redial basis function network, which can be classified as a type of MFNN, in the design of sliding mode controller is also investigated.

本文研究了多层前馈神经网络的结构问题和一种易于硬件实现的学习算法，还讨论了可以划为多层前馈神经网络的RBF网络在滑模控制器设计中的应用。

Fourier transform is used to analyze the grazing incidence X-ray reflectivity curve of nanometer multilayer structures.

利用傅里叶变换分析了纳米多层膜的X射线掠入射反射率测试曲线，模拟了各种制备和测试条件对多层膜结构参数测试结果的影响，检验了傅里叶变换方法的适用性和精确度。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。