查询词典 concave polygon

Ovary ovoid, without concave nectaries at base; ovules 4--6 per locule.

子房卵球形，没有凹陷蜜穴在基部；胚珠4-6每室。

Bulbs attached to vertical rhizome; filaments 1.25--2 × as long as perianth segments; ovary with concave nectaries.

鳞茎着生垂直的根状茎；花丝1.25 --2 *倍于花被片；子房具凹陷蜜穴。

Winth the segmentation function, the stepwise decomposition algorithm can be used to compute the intersecting body volume not only of the convex polyhedrons, but also the concave polyhedrons.

像上面所讲到的多面体相交的体积计算这样一类问题，在其他行业也有类似问题的提出和反映，是值得认真研究和需要解决的问题。

Compared with existing methods, FCPF have the following characteristics:①Can improve precision of collision time and collision points but no more collision detection is needed;②Take into account of not only movement but also rotation of collided virtual objects;③Can find collision time and collision points among convex and/or concave polyhedrons.

与已有的一些方法相比，该方法具有以下特点：①不需要通过增加碰撞检测次数来提高碰撞时刻与碰撞点的求解精度，因而减少了碰撞检测的系统开销，提高了基于物理特性进行碰撞响应的实时性。

The cornice is banded with smooth limestone above intricate spiraling patterns below, and the top-edge of the roofline is straight and horizontal on the front and back and scalloped in a concave fashion on the sides.

在Cornice公司是光滑的石灰岩带上述错综复杂的螺旋式上升模式下面，最尖端的车顶是连续和横向上的正面和背面和扇形的凹地双方。

The self-aligning ball bearing was invented by It has two rows of balls and a common concave sphered raceway in the outer ring.

这种轴承有两列球，外圈有一个共同的凹型球面滚道。

There are convex spherical roller bearing ring raceway is spherical-shaped, with concave spherical roller bearing axle ring raceway is spherical-shaped.

有凸球面滚子的轴承座圈的滚道为球面形，有凹球面滚子轴承的轴圈滚道为球面形。

The double circular arc spiral bevel gearing is a type of points contact transmission by concave-convex tooth profile between meshing gearing, it has the advantages of large comprehension radius of curvature, good lubricating ability etc..

双圆弧弧齿锥齿轮传动是一种凸凹齿廓相接触的点啮合传动，有较大的综合曲率半径，因此有很高的接触强度；且润滑效果良好。

Results: FFA indicated laser disk dropsy, bleeding, the strong fluorescence in laser disk blood capillary expansion and leakage of later period in optic nerve bruise (8 eyes). Retina dropsy in posterior polar and disappearance of concave reflection of central fovea of macula were shown in the eyeground in retinal concussion (22 eyes).

结果 视神经挫伤（8只眼），视盘水肿、出血、FFA示视盘毛细血管扩张及渗漏晚期呈强荧光；视网膜震荡（22只眼），眼底表现为后极部视网膜水肿，黄斑中心凹反射消失。

The etched concave surface on cross beam is caused by long -time erosion of sewage on the bridge dropping from train.

桥梁上的腐蚀凹面是列车上的污物掉落在桥上长期腐蚀的结果。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。