中轴的

Neurotrophic factors play an important role in the culture, proliferation and differentiation of stem cells, and regeneration and remyelination of neurite.

神经营养因子在干细胞的培养、增殖、分化以及轴索的再生和再髓鞘化等过程中发挥着重要作用。

In the study, we have found that when the long axis of an elliptical transducer is 2.5 times of the distance between nodal line and the plate center under free boundary condition, the depth of the first dip in mid frequency range of SPL spectrum can be greatly reduced.

从这些关系中可以得到激振器长轴是在自由边界条件下，节线到振动板中心距离的2.5倍时，中音谷会得到比较平缓的结果。

We have studied modulation instability not only in an anomalous dispersion regime but also in a normal dispersion regime when the angle between the polarized direction and the birefringence axes is arbitrary.

利用光脉冲在非线性双折射光纤中传播时所遵循的相干耦合非线性薛定谔方程，研究了偏振方向与双折射轴成任意角度时，在反常色散区和正常色散区所产生的调制不稳定性。

All backscattering field s intensity from conducting plate can be calculated by complex ray method ,especially complex ray paraxial approximation in angle domain through modeling the conducting plate.

本文通过建立导电平板反射场分析模型，利用复射线方法特别是角域中的复射线近轴近似方法，有效地实现了导电平板在整个后向范围内散射场的计算，同时计算精度可以由复射线展开参数ξ来加以控制。

Among the involving factors, neurotrophic factors in the microenvironment adjoining to perikaryon and neurites play crucial roles in maintaining survival, promoting orientional regrowth of axons and re-expression of functional phenotype of neurons.

近年来大量神经生物学研究表明：在影响损伤后神经修复或再生的诸多因素中，神经元胞体及轴突周围微环境产生的一些神经营养因子发挥着维持受损神经元生存、促进神经再生、恢复神经功能表型等重要作用。

The oil permeability and its influence factors in unsaturated petroleum chalk were studied by carrying out some experiments with a specially improved constant-head permeameter where the matrix suction was controlled with axis-translation technique.

利用改进的常水头压力渗透仪对非饱和油田白垩进行了试验研究，试验中采用轴平移技术来控制基质吸力，据以研究非饱和油田白垩的渗透特性及其影响因素。

This paper reports experimental results of the mixture formed by Pintle nozzle with impinging head used to diesel engines with different combustion systems.

摘 要：介绍了具有油束撞击效应的轴针式喷油器在不同柴油机燃烧系统中的应用。

The design of these wall frames does not utilise the full strengthening effects of the plasterboard in carrying the axial loads.

在这些墙架的设计中没有利用石膏板在承担轴向荷载方面的增强效应。

The three-axis rotating platform calibration formulas of scale factor error and mounting error of laser gyro in SAHMS have been deduced.

推导了基于三轴转台的用于标定系统中激光陀螺刻度因子误差和安装误差的公式。

NgR has emerged as a focal point of convergence for mediating growth-inhibitory activities.

NgR是中枢神经元细胞膜上的一种蛋白，该蛋白和p75NTR及LINGO-1这两种中枢神经元细胞膜蛋白组成复合受体，介导了中枢神经系统髓磷脂中MAG、OMgp、Nogo对中枢神经元轴突生长的抑制作用，从而造成了成年哺乳动物中枢神经损伤后再生困难。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。