查询词典 central axis

Methods(1)4 cities were chosen randomly according to their economic status and geographical location.(2)An autorefractor was used to detect the diopter in the preschool children from 20 kindergartens randomly selected from each of the 4 cities.(3)1%atropine ointment was applied to the c onjunctival sac of the children with suspect myopia for 3 days and the refractio n of light in their retina was then examined by a barred beam skiascope.(4)The eye axis and corneal curvature of the myopic children were measured.(5)The diop ter,eye axis,and corneal curvature were examined every 6 months during 1-year f ollow-up after the diopter was properly rectified.

(1)依经济状况和地理位置按随机原则抽取4市县；(2)从4市县中各随机选择20间幼儿园，对所抽取的在园学龄前儿童用自动屈光仪进行屈光筛查；(3)可疑近视患者予以1%阿托品眼膏涂双眼3d，由专人用带状检影镜进行视网膜检影验光；(4)确诊为近视的患者自愿进行角膜曲率和眼轴测量；(5)近视患者经适当的屈光矫正后，按要求进行为期1年的前瞻性随访，每半年进行1次屈光状态、角膜曲率和眼轴的检测。

A superposition cut is used to describe a cross section of a part by revolving it around an axis of revolution and placing it on the views on the axis.

在不影响图形清晰的条件下，断面也可按投影关系画在视图内，画在视图内的断面图称为重合断面图。

The worm hole is a magical point, that is defined by the intersection of the axis of rotation of the u-joint shaft with the axis of steer.

该蠕虫洞是一个神奇的一点，就是确定的十字路口的旋转轴U型联合轴与轴的指导。

The important thing to know that it has an axis of symmetry — the optical axis.

重点是知道主镜有一个对称轴——光轴。

Application of both finite element and combined strip element to axis symmetry problems;2. Basic definition of axis symmetry has been given with three specific examples.

通过三个例子讲述了折叠矩形后满足轴对称的基本定理，并分别从折叠一次、两次介绍了折叠型的解题方

Then the problem is further equivalent to a kind of Riemann boundary value problem on the real axis by extension of symmetry with respect to the real axis.

利用已有结果得到了该问题的可解性定理。

Electronic barke applied to both principal axis and stroke,flexible axis enables the adjustment of synchoronus brake

主轴、冲程均用电子刹车，调整时主轴可自由旋转，可方便地调整到同步刹车。

Based on traditional magnet circuit anglicizing way and permanent magnet drawing and by using traditional BLONDEL theory, A model for electromagnetic calculation and formulas for voltage are obtained by dealing with the d- axis and q-axis electromagnetic coupling of the double- winding armature reaction.

并在常规稀土永磁同步发电机的磁路分析和永磁体图解法的基础上，利用传统的双反应理论，通过对双绕组电枢反应的d-q轴电磁解耦，推导出双电压复合励磁稀土永磁同步发电机的电磁设计数学模型。

Product brief introduction: GXF is inclined shed fan to be bosomy shape structure, the characteristic with its small imports and exports expedited the velocity of flow of air current, pressure coefficient is tall, shed fan with general axis below the circumstance of equal opportunity order, its discharge pressure all is more than general axis to shed the discharge of fan, pressure.

制品介绍：GXF斜流风机为鼓型构架，其进岀口小的特征加速了气流的流速，压力参数高，同一般的轴流风机一样机号的境況下，其访问数量压力均大于一般轴流风机的访问数量、压力。

The structure is formed by the assemblage of the second building units: cancrinite cage, according to the hexagonal space groups P63/mmc. It has not only the 18-ring pore channel system which parallels to the c-axis as in VPI-5, but also 10-ring pore channel system along both a and b-axis. The results obtained from calculating the bond distances and angles between the...

与VPI-5类似，具有平行于c方向的十八元环直孔道结构，但侧面有十元环孔道，通过计算该结构模型各原子间的键长、键角，认为该结构有可能存在，采用POWD-MODELING程序，计算了它的理论XRD谱图并绘制出其立体拓扑结构。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。