板层

A transient dynamic finite element analysis program APIC is developed to calculate the impact behaviour of the impactors and the panels.

本文编制了一套用于对复合材料层板及加筋层板的冲击损伤问题进行模拟计算的动态有限元分析程序APIC。

According to the method for the bending analysis of composite laminates developed by the authors, Green's functions of an infinite unsymmetric laminate with elliptic hole or crack are obtained.

运用作者建立的复合材料层合板问题的求解方法，得到了含椭圆孔和裂纹的无限大非对称层合板在广义集中载荷作用下的Green函数。

Based upon the results of experiment and calculation of several representative unsymmetric composite laminates , the coupling characteristics of unsymmetric laminate was studied.

为了解决机翼的扭转发散、载荷重新分布及操纵反效和操纵效率等问题，基于非对称复合材料的各向异性及相对于普通复合材料更好的可设计性，以几种典型非对称复合材料层板的试验及计算为基础研究了非对称层合板的各种耦合特性，并进行了非对称复合材料机翼的设计，得到了满意的结果。

It is therefore important to understand the vibration characteristic of multiple delaminated composite plates to the accuracy in design and the safety in use of composite structures under the dynamic loading.

研究含多分层损伤复合材料层合板和加筋板的振动特性，对于在动荷载作用下的复合材料层合结构设计的准确性、使用的安全性都具有重要意义。

An ultra-high strength, weldable, low alloy steel with excellent cryogenic temperature toughness in the base plate and in the heat affected zone when welded, having a tensile strength greater than 830 MPa (120 ksi) and a micro-laminate microstructure comprising austenite film layers and fine-grained martensite/lower bainite laths, is prepared by heating a steel slab comprising iron and specified weight percentages of some or all of the additives carbon, manganese, nickel, nitrogen, copper, chromium, molybdenum, silicon, niobium, vanadium, titanium, aluminum, and boron; reducing the slab to form plate in one or more passes in a temperature range in which austenite recrystallizes; finish rolling the plate in one or more passes in a temperature range below the austenite recrystallization temperature and above the Ar3 transformation temperature; quenching the finish rolled plate to a suitable Quench Stop Temperature; stopping the quenching; and either, for a period of time, holding the plate substantially isothermally at the QST or slow-cooling the plate before air cooling, or simply air cooling the plate to ambient temperature.

在基体板以及焊接时的热影响区处的低温韧性优异的超高强度、可焊接、低合金钢具有高于830MPa（120ksi）的抗拉强度，并且具有包含奥氏体薄膜层和细晶粒的马氏体／下贝氏体板条的显微层状组织，所述钢的制备过程为：加热含有铁以及特定重量百分比的添加元素的钢坯，所述添加元素为碳，锰，镍，氮，铜，铬，钼，硅，铌，钒，钛，铝，以及硼中的一些或全部；在奥氏体可发生再结晶的温度范围内，采用一个或多个道次，将所述钢坯轧制成板材；在低于奥氏体再结晶温度但高于Ar 3 转变点的温度下，采用一个或多个道次对所述板材进行终轧；将所述终轧板材淬火至一适当淬火终止温度；停止所述淬火；或者在空冷前在QST点基本等温保持所述板材一段时间，或者对所述板材进行缓慢冷却，或者只是简单地将所述板材空冷至室温。

Enterprise spirit: Sends knows the professional diligent highly effective innovation development harmonious order work policy: Conscientious, starts the enterprise quality policy from me: The pursue quality remarkable, the satisfied customer demand, pays attention to the staff to develop, the promotion enterprise value electron seal limited company is produces the sale refractory ceramics electric circuit board, the ceramic line board, 12 below ceramic multi-layers altogether burns the ceramic line board, the high efficiency mold block, the ceramic insulator board, each kind of ceramic fitting and each kind of metallized ceramics substrate.

企业精神：致知敬业勤力高效创新发展和谐有序工作方针：脚踏实地、从我做起企业质量方针：追求品质卓越、满足顾客需求、关注员工发展、提升企业价值电子封装有限公司是生产销售高温陶瓷电路板、陶瓷线路板、12层以下陶瓷多层共烧陶瓷线路板、大功率模块板、陶瓷绝缘板、各种陶瓷配件及各种金属化陶瓷基片。

In the invention, a plurality of high power LED chips are integrated on a laminated base plate of aluminum nitride AIN and low temperature co-fired ceramic LTCC. The heat dissipating capability of the high power LED chips is improved from the levels of the underlay, a bond coat and the base plate.

本发明采用多颗大功率发光二极管LED芯片集成在氮化铝AlN和低温共烧陶瓷LTCC叠层基板上，从衬底、粘结层和基板三个层次上提高大功率发光二极管LED芯片的散热能力。

According to research on space between wheel and Cart rut traverse curve of single roadway, the width of strip slab was fixed. When there was horizontal loading on slab, contact state between strip slab and base course was studied, and finite element model was established. Comparing maximum principle stress among different load position on slab, it was found that the critical loading position of cement concrete strips pavement was the middle of longitudinal joint.

对车辆轮距和单车道轮迹横向分布曲线进行分析，确定轮迹板板宽；在有水平荷载作用时，对轮迹板与基层的层间接触状态进行分析，建立有限元计算模型，对比荷载作用在轮迹板不同位置时的最大主应力，最终确定水泥混凝土轮迹路面板的临界荷位为纵缝边缘中部。

The link plates manufactured by using high-precision friction press ensures long wear life and high fatigue strength of chain joint links, and special medium-frequency heater ensures the highest hardness, thickest hardfacing layer and longest wear life of chain pin surface and avoids sudden breaking of chain pins due to the impact force.

专用的铰孔技术确保了链条链板的节距与孔径的统一性；精密摩擦压力机锻制的链板确保了链条链板的高耐磨寿命与高抗疲劳，专用的中频加热设备确保了链条销轴表面的最高硬度与最替代日本链条的高速板链链条深的硬度层、最长的耐磨寿命，避免了链条的削轴的冲击突然断裂。

P: paper-based epoxy resin copper-Park Ji-layer paper between phenolic resin and glass cloth epoxy resin substrate board of the electrical characteristics of the middle, humidity, and heat resistance, used in single-and double-sided printed circuit boards, the main purpose of which is the circuit used for a variety of power requirements of high-frequency characteristics of substrate and the color TV, VTR, etc. used in tuning, as well as the board, such as OA machines.

。P：纸质环氧树脂铜泊积层有介于纸质酚醛树脂基板及玻璃布环氧树脂机板中间之电气特性，耐湿性，耐热性，使用于单面及双面印刷电路板，主要的用途是用于各种电源回路用基板及要求高周波特性之彩色TV，VTR等之调谐器用，以及OA机器等机板。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。