查询词典 convex

The study found that it is not symmetrical convex parabolic type, left and right sides are not equal to the minimum axial velocity near the rod at the minimum axial velocity is small in the different condition from water to the various solution of HPAM chroma in the vertical eccentricity annuli with wide gap at pipe.

研究发现不同介质的流体在螺旋流条件下，其在偏心环空中的轴向速度分布不是左右对称的凸抛物线型，而是中间有凹陷且左右不对称的抛物线型，其轴向速度的极值点向模拟油管内壁偏移。

Two convex lenses of equal diameter with a focal length of 3cm and 5 cm respectively have parallel light Rays passing through them.

想象假如没有透镜我们的生活会有什么不同？如下图所示： A 、 B 是两个口径相同的凸透镜，它们的焦距分别是3cm 和5cm。。

A tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays leave the slit as a parallel beam.

一端包含一个凸起的消色差透镜另一端在镜头的中心有一个小切口的小管；光线通过小切口成为平行光线。

Prominent in the raceway surface and rolling parallel to the direction of the narrow convex shoulder.

突出于滚道表面与滚动方向平行的窄凸肩。

Corolla tube tubular, base spurred; limb 2-lipped; lower lip convex, dilated toward center of upper lip, almost closed at throat, and making corolla personate, 3-lobed, densely glandular hairy; upper lip erect, 2-lobed.

花冠筒管状，基于距；瓣片二唇形；向上唇的中心凸，膨大的下唇，几乎关闭在喉部，并且使花冠假面状，3浅裂，浓密腺毛；上唇直立，2裂。

The system can be configured as an upgrade for an installed Picus or as an option on a new Picus, and can be used with all convex and endocavity Picus probes.

该系统可以做为已安装的Picus设备的升级产品，或者做为新Picus设备备选产品。它能够在所有凸镜与腔内Picus探测器中使用。

This method could not only applied to outer noncircular gear with all convex pitch line but also applied to outer noncircular gear with partial concave pitch line and inner noncircular gear.

这种磨削原理不仅可以应用于节曲线外凸的非圆齿轮，而且可以应用于磨削带内凹节曲线的外非圆齿轮及内非圆齿轮。

At the same time, the essential motion in the gear grinding process and the structure of gear grinding CNC has been discussed. This method could not only applied to outer noncircular gear with all convex pitch line but also applied to outer noncircular gear with partial concave pitch line and inner noncircular gear.

把成形砂轮看作插齿刀的一个刀齿，就可以利用非圆齿轮插齿加工过程中齿廓成形原理，推导出非圆齿轮齿廓的成形砂轮展成磨削方法，同时讨论了按这一原理磨齿时需要的运动及数控机床结构。

The paper presents an efficient approximate algorithm for Convex Hull of very large planar point set.

提出了一种计算海量平面点集凸壳的快速近似算法——点集坐标旋转法。

Comparison of much experiment data shows that the algorithm is very efficient for calculating convex hull of planar massive scattered point set, and for the point set of 107 level, its execution time on a 2.00 GHz personal computer is only three to four seconds.

通过大量实验数据对比说明，算法对求平面海量散乱点集的凸壳非常有效，点集为107数量级的执行时间在主频为2.00 GHz计算机上仅为

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。