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1·We introduce concepts of diagonal quasi-convexity and quasi-concavity in hyperconvex metric spaces.

我们介绍了超凸度量空间中对角拟凸和拟凹的概念。

2·Experimental investigations show that the semiempirical concavity calculation formulation given here are practical.

提出的计算凹度的半经验公式，经过实践考验证明具有一定的实用价值。

3·Objective: To investigate the effects of variations in vertebral endplate concavity on the mechanical behaviors of the lumbar motion segment.

目的：研究终板凹陷程度变化对腰椎运动节段生物力学影响。

4·It is evident that curvature of doming whether on the crest (convexity) or on the flanks (concavity) have no major effect on fracture densities.

很明显，穹窿的曲率在波峰(突起)或两翼(凹陷)对断裂密度都没有很大影响。

5·Results Paranasal concavity deformities of 17 patients were corrected. The results were satisfactory and no complication such as infection or implant being extruded occurred.

结果：17例患者鼻旁区凹陷得以矫正，外形效果满意，无感染、假体外露等并发症。

6·The formation of arch effects will bring the sand filling over the region of deep concavity hindered and the degree of compaction of molding sand at the deep concavity reduced.

它的形成会阻碍型砂向深凹区的填充，使得深凹处砂型紧实度降低。

7·With the concavity and integrability of sublinear terms near zero, the symmetry results for a class of sublinear elliptic equations are given by making use of the moving-plane method.

摘要本文利用次线性项在零点附近的凹性和可积性，用移动平面法给出了一类次线性椭圆方程正解的对称性。

8·On the basis of analyzing shape features of tomatoes, leaves and branches, we extract features of roundness, slightness, concavity degree and denseness depending on Fourier description.

研究了西红柿、叶子、枝干的形状特征，通过傅立叶描绘子，提取基于傅立叶系数导出的如圆形度、细长度、凹度、密集度等形状特征。

9·At the level of azygos vein, 100% of the lymph nodes of azygos vein and the superior aortic recess were located among the superior vena cava, arch of azygos vein, trachea and concavity of aortic arch.

在奇静脉弓平面，奇静脉弓淋巴结和主动脉上隐窝位于上腔静脉、奇静脉弓、气管和主动脉凹面所围成的气管前间隙内。

10·During more and more open pit transiting to concavity open mining, people make much account of the study on the best slope mechanical configuration, which in favor of the stability of concavity slope.

随着越来越多的露天矿山转入深凹露天开采，有利于深凹边坡稳定性的最优边坡力学形状研究越来越受到人们所认识和重视。