凹边的

Part II, the artificial boundary condition and its numerical methods based on natural boundary reduction for a hyperbolic initial boundary value problem in an infinite domain with a concave angle is investigated.

第二部分，研究一类具有凹角的无界外区域的双曲型初边值问题基于自然边界归化的人工边界条件及其数值方法。

Secondly in§3.2 ,firstly we prove a new fixed point theorem on Banach space,and study the Sturm-Liourille boundary value problem with the theorem and some properities of concave function, then the existence of three positive solutions is gotten.

第二节，先证明一个新的锥上不动点定理，再利用此定理及凹函数的性质来研究边值问题，得到了三个正解的存在性。

It is a wheel with a grooved rim and can rotate freely.

它是一个带有凹边的齿轮而且能自由地转动。

Deep rock slope of open-pit is rock excavation engineering at present.

岩石深凹边坡工程是人类进行的最大的岩石开挖工程。

A relief business card printing and membership card: image concave, the side image areas surrounded by box.

凸版制卡和会员卡制作：印纹部份凹下，印纹四周有框边的感觉。

Through the work of the engineering and hydrology geology investigating, geologic structural planes investigating, acoustic test and deformation monitoring, and study on distribution rules of geologic structural planes, damage modes of slope, scope of loose zone, deformation rules with FLAC3D numerical simulation, the engineering proterties of loose zone is knowledged.

通过对金堆城深凹边坡松动岩体进行工程地质和水文地质的调查、节理裂隙调查、声波测试、变形监测等现场工作，研究了边坡结构面分布规律，边坡潜在的失稳模式，松动范围，变形规律，结合FLAC~(30)数值模拟，基本认识了金堆城深凹矩形边坡松动岩体工程特性。

The press process of blanking,drawing, perforating, flaring, trimming are adopted. In this paper, the process suitability of part is analysed. The process parameters, such as blank layout and press force are calculated. The general construction of mold and main parts are designed. The compound die of blanking,drawing,perforating and the simple press tool of flaring,trimming and detail drawings of main parts are drawn.

设计中分析了工件的冲压工艺性，对毛坯排样、冲压力、刃口尺寸等进行了计算，并且对模具相对应的凸模和凹模进行了强度校核，以及模具总体结构、主要零部件的选择与设计，绘制了落料、拉深、冲孔复合模和翻边、切边的单工序模具装配图和模具的主要零件图。

With the exception of severe blank holder deflection, these factors can be corrected by making minor permanent adjustments, such as increasing the blank holder force, re-adjusting the equalizer height, and refitting or spotting the blank holder or the die face.

除了压边圈的严重变形外，这些因素都可以通过最小的永久性调整来矫正，如增加压边力、调整平衡块的高度和重新匹配或研配压边圈或凸/凹模的型面。

It is indicated from results that oil seal edge with regular groove has more resistance and make the carrying capacity be increased. In addition the more number of grooves, the greater carrying capacity.

得到具有规则形状凹槽的封油边能够提供大的出油液阻，进而可以提高油腔承载能力的结论，且凹槽数量越多，承载能力越大。

Firstly, the mechanical analysis on the stability of deep-concave open pit slope based on the theory of elasticity has been presented, thus offering the probable cause theoretically for using the convex-form slope in the deep-concave open pit on one hand and the preliminary method to determine the rational shape of slope on the other hand.

首先，基于弹性理论对深凹露天矿边坡的稳定性做了力学分析，从而为凸形边坡在深凹露天矿的应用提供了理论依据，同时为确定合理的边坡形状提供了初步方法。

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。