头节样的

Based on extended Linsker's network developed by Wimbauer et al.,we build a model for the receptive field of toad's R3 ganglion cell and a model for the receptive field of the nLM neuron of pigeon. Computer simulations on the 'head/tail preference' property,the configurational selectivity of the R3 neuron,and the selectivity for contrast,direction,orientation and the length of the moving edges of the nLM neuron,have been made. The simulation results are consistent with the physiological experiments qualitatively.

为揭示这类神经元的信息加工原理，以Wimbauer等人提出的时延Linsker网络为基础，通过将不同的时空动态感受野线性组合，建立了蟾蜍视神经节R3类神经元和家鸽扁豆核神经元的感受野模型，并模拟了R3神经元对蠕虫样刺激物的"头/尾偏爱"特征，细胞对刺激物的构型选择性以及nLM神经元对运动边缘的反差、方向、边缘朝向和长度的选择性。

Egg capsule showed no clear boundary and contained only one egg. However, the scolex and suckers of R. tetragona were oval in shape, and the neck was long and thin. The ovary was flower-like. Each egg capsule contained 4-12 eggs and many calcareous corpuscles, each of which was surrounded by a membrane.

四角瑞利绦虫链体相对较长，头节及吸盘均呈椭圆形，颈部尤为细长；卵巢呈花朵样分瓣，卵黄腺呈豆状，卵囊周围有明显的囊壁，卵囊内含有4～12个数目不等的虫卵及大量成团的细小折光性颗粒。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。