临界值

The critical buckling loads and buckling modes are described by eigenvalues and eigensolutions in symplectic space.

在辛几何空间中，将圆柱壳的临界屈曲载荷和屈曲模态归结为辛本征值和本征解问题。

A Hamiltonian system was constructed for the fundamental problem of the dynamic buckling ,thereby problems of critical loads and buckling modes were reduced to determinations of eigenvalues and eigensolutions in a symplectic space and a symplectic method was proposed.

针对有内压或外压的弹性圆柱壳在轴向冲击载荷耦合作用下的动态屈曲问题，构造哈密顿体系，在辛空间中将临界载荷和动态屈曲模态归结为辛本征值和本征解问题，从而形成一种辛方法。

Analysis of power spectrum indicates that the characteristic frequency created by the Hopf bifurcation is equal to the generalized winding number of the critical transverse modes just before the bifurcation.

结果表明，耦合振子的同步混沌态可以发生一种Hopf分岔，在Hopf分岔后，系统的功率谱中出现了一个特征频率，其值恰好等于分岔前临界横模的广义旋转数。

The maximum field on the right of ring junction decreases with the increase of ring spacing and lateral diffusible depth.

在场限环结构中，当主结和环结在表面处的最大电场强度均等于临界电场强度时，击穿电压达到最大值，此时所对应的环间距为最佳环间距。

All these suggest that Juncus Effuses could be used as an indicator of critical value of the toxic effects of the heavy metals, Cu, Cd, Pb, Zn and As, in soil, set on the basis of the upper limit of Grade Ⅱ criteria of the State Soil Environmental Quality Standard.

通过应用综合生态环境效益法，以灯心草为指示植物可以将土壤环境质量二级标准上限值设定为土壤中5种重金属的临界毒性效应值。

Thermal conductance of yellow-browed bunting,chestnut-flanked white-eye,hwamei and red-billed leiothrix were 0.24,0.31,0.21 and 0.34 ml O2/,respectively,below the lower critical temperature,which were 149％,149％,215％,and 243％ of the expected value based on their body mass,respectively.

在下临界温度以下，黄眉NFDA2、红胁绣眼鸟、画眉和红嘴相思鸟的最小热传导分别是0.24、0.31、0.21和0.34 ml O2/，分别是体重预期值的149％、149％、215％和243％。

However, this critical gas metallicity is still poorly determined.

然而，这个临界丰度值还难以确定。

Grounding on the purpose of industrialization of laser, based on the thought of astigmatism compensation and thermal stability of the cavity, we employed high power LD to pump Nd:YVO4 crystal and used the introcavity frequency doubling with type 1 noncritical phase-match LBO crystal, which has high damage threshold. The cavity parameters are optimized by the use of ABCD theory and the resonatorstructure CAD software.

立足于激光器的产品化，基于谐振腔的像散补偿和热稳定性的设计思想，采用大功率LD单端泵浦Nd：YVO_4晶体，具有高光损伤阈值的Ⅰ类非临界相位匹配LBO晶体腔内倍频方案，应用ABCD定律和腔结构模拟软件CDA设计并优化了一组腔参数。

The performance of multiwavelet denoising is investigated, a new method that estimate the size of noise is presented, the method is adopted to multiwavelet transform for non-critically sampled prefilter.

对多小波图像阈值降噪进行了研究，提出一种新的适合于非临界预处理的多小波变换的噪声估计方法。

The preparation of avermyctin emulsions in water was achieved by mixing the surfactants polyoxyethylene (10) octylphenyl ether (OP10), polyoxyethylene styrenated phenol ether (602), and polyoxyethylene (40) castor oil ether (EL-40) with polyoxyethylene (20) castor oil ether (EL-20), separatively. Emulsion stability was investigated by analyzing the hydrophile-lipophile balance, critical micelle concentration, and surface tension. Then, the surfactants of polyoxyethylene polyoxypropylene styrenated phenol ether (1601), block copolymer (L64), and octyl phenyl polyoxyethylene phosphonate were added to the emulsion made by blending EL-40 and EL-20, separatively. The stability of the emulsions was investigated further and discussed in terms of droplet size, surface tension, and zeta potential.

首先将辛基酚聚氧乙烯醚(OP10)、苯乙烯基酚聚氧乙烯醚(602)和蓖麻油聚氧乙烯(40)醚(EL-40)分别与蓖麻油聚氧乙烯(20)醚(EL-20)复配制备阿维菌素水乳剂，从亲水亲油平衡值、临界胶束浓度、表面张力等方面分析了二元表面活性剂复配对乳液稳定性的影响；其次，在EL-40与EL-20复配基础上，将苯乙烯基酚聚氧乙烯聚氧丙烯醚(1601)，嵌段共聚物(L64)和辛基酚聚氧乙烯醚磷酸酯分别添加到乳液中，从粒径、表面张力和zeta电势等方面考察三元表面活性剂复配对乳液稳定性的影响。

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。