引入的

OBJECTIVE:In 1971, Olney and his associates discovered that excited amino acids , such as Glutamic acid, could arose cell death of centrum neural system, and for the first time they imported excitotoxin.

目的：1971年，Olney等发现谷氨酸（Glutamic acid，Glu）等兴奋性氨基酸能引起中枢神经系统的细胞死亡，并引入了兴奋毒这一概念。

Among the method operator decomposed method was introduced Which can improve S/N ratio and continuity of section.

其中引入了算子分解法。这有利于改善剖面的信噪比和连续性。

It shows that when one screw is of opposite phase to the other one, the pure elongational force field is be caused by the vibration, along with the oscillating effect during the course of the surface stretch.

引入右Cauchy-Green张量分析了间隙内的界面拉伸量，发现当两根螺杆反相位振动时，螺棱侧间隙内存在纯拉伸力场，而且界面在拉伸过程中存在着振荡效应。

Optical fibre amplification can be used to improve signal intensity.

建议引入光纤放大器，这样可以在保证信噪比的情形下，提高信号强度。

For preventing the control system from system uncertainties and external perturbations the robust sliding mode controller is designed to guarantee the system to trace the optimal trajectory.

在实施非线性控制中，本文首次将δ算子及其在频域上对应的〓变换引入到汽车电子控制领域。

The author introduce comprehensive resources then use base figure method and ordinal number method and risk method that carry on quantitative analysis from different sides.

作者引入综合资源论，运用基数方法、序数方法以及风险法从不同侧面对人的价值进行量化分析。

Msmodel is formulated with the relative displacement and the contact press direCtiyin the orthogonal coordinate syStem, without introducing the slip angle asvariable and transforming the variab1e to the polar coordinate system.

在工程实际中得到大量应用的二维摩擦接触问题迭代法，贴近力学直观，无须引入额外变量，无须计算导数矩阵，被工程界所熟悉。

By means of the Singular Spectrum Analysis, We transform the reconstructed space to an orthogonal coordinate and then calculate its correlation dimension.

通过对重构空间引入奇异谱分析，将状态矢量变换到一组正交的坐标系，进而计算其关联维数。

Fourth,Simul8 will be introduced in logistics simulation for the first time in this paper,and use it to build the simulation model of distribution and procurement business process;at the condition of out-of-stock,it uses Arena to construct the optimal order point simulation model under VMI,and advances the simulated optimization program.

第四，本文首次将Simul8引入物流仿真领域，并用其构建了采购配送业务流程仿真模型；在允许缺货的条件下用Arena构建了VMI下最优订货点仿真模型，并进行了仿真运行和仿真分析，提出了仿真优化方案。

In the alkali-boron-silicon system basic fluxing agent,we use the combined effects of alkali metals,alkali earth metals and admixture s to replace lead,in order to produce environment-protecting unleaded fluxing agent for overglaze colors with low bismuth.

在碱-硼-硅系统基础熔剂中引入外加剂，通过多种碱金属、碱土金属及外加剂等复合效应来代替铅在熔剂中的作用进而研制低铋环保型无铅熔剂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。