Economical circumstances, propagation conditions and so on in China and the United States in later of 20'th century have important effect on the dominant ideas development.
中美20世纪后期的经济环境、传播条件等因素对中美广告设计主导观念演变具有重要影响。
This study reveals not only the technique of propagation of P. ensiformis with spores for horticulture but also the proper conditions for molecular biology, genetics and systematics study.
该研究为园艺学研究提供了用孢子人工繁殖剑叶凤尾蕨的方法，也为分子生物学、遗传学和蕨类植物系统学研究提供了基础。
The paper Presents conditions of stability in the non-magnetized plasma electromagnetic wave propagation and gives a non-magnetic plasma dispersion of the FDTD method, the results were analyzed.
给出了电磁波在非磁化等离子体中传播稳定条件，并给出了非磁化色散等离子体的FDTD方法，同时对结果进行了分析。
It could be controlled under some conditions. Controlled beam becomes mode which is unchanged propagation in linear media.
在一定条件下它是可控的。受控成模后在线性介质中传播保持其模不变。
Taking into account the fifth-order nonlinearity in the refractive index of the fiber, the dark pulse propagation in fibers is simulated numerically for the varying initial conditions.
考虑到光纤折射率的五阶非线性极化效应，本文对不同初始条件下，光纤中黑脉冲的传输进行了数值模拟分析。
The diverse propagation way and complex application conditions bring worm eruption in frequency, latency and overcast, therefore the worm does very serious crisis to the network.
在网络环境下，多样化的传播途径和复杂的应用环境使网络蠕虫发生频率增高、潜伏性变强、覆盖面更广，给网络造成了极大的危害。
For the present experimental conditions, it is found that the flame propagation velocity is a weak function of dust concentration in cornstarch dust clouds.
在所考察的实验条件下，粉尘浓度对于玉米粉尘火焰传播速度的影响不大。
The propagation of the cavities can be controlled and thus the ductility of the alloy can be increased by suitably controlling the deformation conditions.
适当地控制变形条件，可抑制孔洞的扩展，从而能提高合金的延伸率。
A geometric ray model for the propagation of light in a step fiber is presented, and the cut-off conditions are derived.
提出阶跃光纤导光的一种几何射线模型，方便地求出了截止条件，并与光波导理论所得结果作了比较。
Atmospheric duct is a common phenomenon over the oceans and conditions of anomalous radio propagation.
大气波导是海上经常出现的现象，会导致电波异常传播。
The propagation field and velocity of positive streamer are investigated under different pressures and humidity conditions through a three-electrode system.
为了解流注传播电场测量中大气参数的影响，利用“三电极系统”研究了不同气压湿度条件下正流注的传播电场和传播速度。
Under conditions of easterly flow, therefore, or very large westerly flow no vertical propagation will occur .
所以在东向气流或很大的西向气流的情况下，将不发生垂直传播。
The modal cutoff properties and exciting conditions of higher order resonant modes for Ge-doped photonic crystal fiber Bragg grating(PCFBG) are investigated using beam propagation method(BPM).
采用光束传播法研究了实心掺锗光子晶体光纤布拉格光栅（PCFBG）的模式截止特性。
By weight method, the water absorption law and its effect on the propagation reliability of plastic nonel tube under different water dipping conditions were investigated in this paper.
文章用重量法研究了不同浸水条件下导爆管的吸水规律及其对传爆可靠性的影响。
The propagation characteristics of this model is analyzed. Emphasis is placed on the characteristic equation of different models, the cutoff conditions and the cutoff properties of the waveguide.
分析了该模型下的传播特性，重点讨论了各类模式下的特征方程、截止的条件及波导的截止特性。
This paper discusses the energy release of crack and cut in propagation under general boundary conditions and points out that the use of force potential can result in an error under these conditions.
本文讨论了一般边界条件下裂缝扩展的能量释放，指出了此时运用力势概念所能导致的错误。
Atmospheric duct propagation is an anomalous propagation phenomena associated with specific weather conditions.
大气波导传播是一种与特殊的气象条件相关的反常传播现象。
The propagation of stress waves in solids can be considered as a part of the field of acoustics or ultrasonics depending on the conditions.
应力波在固体中的传播，根据其条件可视为声场或超声场的一部分。
In this paper, a relative criterion method is presented for analysing the elastic plastic stable crack propagation under biaxial loading conditions.
本文提出了一个用相对准则分析双向载荷下弹塑性裂纹稳定扩展的方法。
This paper is devoted to the problems concerning the propagation and fracture of the cracks on the welds of the tubes under the random load conditions.
本文研究在随机载荷作用下，管状杆件焊接部位裂纹的扩展及断裂问题。
On the basis of the above test, we suggest that the crack propagation law for all electric porcelains depends on sintering composition of test materials, environment and loading conditions.
试验还表明电瓷材料静态疲劳裂纹扩展规律与材料的配方、环境和受力等因素有关。
This method can effectively determine the direction of the pressure wave propagation and source, thereby excluding the impact of adjustment of working conditions, reduce the system false alarm rate.
该方法能够有效的判断压力波的传播方向和来源，从而排除了工况调整的影响，降低了系统误报率。
Then adding a variety of activating agents , the enzyme production of Aspergillus oryzae were investigated on the basis of the conditions of the best starter propagation process;
然后在获得最佳制曲条件的基础上，加入各种激活剂，考察对米曲霉产酶的影响；
This paper investigates the control of the excess propagation of Cyclops by the top-down effect of fish, such as silver carp and bighead carp under different stocking biomass conditions.
该文在不同放养生物量下进行鲢鱼和鳙鱼控制水蚤孳生的下行效应试验研究。
The stress fields are compression ones, in that conditions, the structure styles are folds, Fault-bend folds, Fault-Propagation folds, Detachment folds, imbrications-thrust faults and so on.
研究区构造应力场主要为挤压应力场，区内主要形成褶皱、断弯褶皱、断展褶皱、叠瓦逆冲构造、冲起构造和逆冲三角构造等构造样式。
The stress fields are compression ones, in that conditions, the structure styles are folds, Fault-bend folds, Fault-Propagation folds, Detachment folds, imbrications-thrust faults and so on.
研究区构造应力场主要为挤压应力场，区内主要形成褶皱、断弯褶皱、断展褶皱、叠瓦逆冲构造、冲起构造和逆冲三角构造等构造样式。
应用推荐