临界的

Experiments have been performed using ultra-short (30fs) ultra-intense laser pulse(up to 1018W/cm2) focused into under-dense plasmas(ne＜1020/cm3). A 2ω0 probe pulse was used for the shadowgraphy and the investigation on the propagation of laser under various condition was presented.

开展超短超强激光与次稠密等离子体相互作用实验，采用探针光对激光等离子体相互作用区域进行阴影成像，研究了不同激光功率与临界功率比值及不同激光脉冲长度与等离子体波波长比值下的激光在次稠密等离子体中的自聚焦传输。

The results show that POE has linetype molecule structure and sharkskin fracture occurs when the shear rate achieves a critical value.

结果表明，POE为线型分子结构，当剪切速率达到某一临界值时，挤出物表观出现鲨鱼皮畸变；Engage 8003与Engage 8150比较，前者的粘-温敏感性较大且挤出物外观明显好于后者，而后者的粘-切敏感性较大。

Programs, AFITA and SHET, are developed, which can be used to compute the critical velocity for straight tube arrays and U-tube arrays of all sorts of tube arrangements in uniform and non—uniform flow and to calculate the response of tube due to flow induced vibration.

6开发了软件AFITA、SHET，能进行三角形、矩形排列的U型管和直管管阵、均匀流和非均匀流的临界流速分析，单根管自由振动和湍流诱发振动分析。

To resolve the rail side abrasion, it's necessary to elevate the vehic...

因此 ，解决钢轨的交替不均匀侧磨问题，关键在于提高车辆的蛇行临界失稳速度。

The I-V curves of the power SITH exhibit reverse snapback phenomena, and even turn to the conducting-state, when the anode voltage in the forward blocking-state is increased to a critical value.

当工作在正向阻断态的阳极电压增大到某一临界值时，静电感应晶闸管的I-V曲线呈现出反向转折特性，甚至转向导通态。

The critical crossover behavior in the ternary electrolyte solutions of water＋3-methylpyridine＋sodium bromide is a matter of debate.

对水＋3-甲基吡啶＋溴化钠三元电解质溶液的临界跨接行为的认识存在着争议。

Properties of nonlinear buckling deformation of round soleplate with slot structure under concentrated load are studied.

运用MSC.Nastran求解器计算了薄壁圆柱壳在轴向压力作用下的临界载荷、屈曲模态及薄底板在集中载荷作用下的非线性屈曲问题。

With respect to a pair of typical spiral bevel gear train system, the critical speed and unbalance response of the system are worked out by means of transfer matrix method.

以一对典型的弧齿锥齿轮传动系统为研究对象，应用传递矩阵法计算系统的临界转速和不平衡响应。

It analyses the influence of support stiffness on critical speed and unbalance response and vibration characteristics of the spiral bevel gear train system.

讨论了支承刚度对系统临界转速及不平衡响应等振动特性的影响，得出一些规律性结论，用以指导齿轮传动系统的设计。

Finally, the research concerning the magnetic field treatment in different stage on the effect of coagulation de-silication has been tried.

与前人的研究比较，本论文的创新之处表现在：（1）对火力发电厂亚临界压力锅炉补给水进行了研究。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐