Thickness,center.

Objective: To investigate the change of corneal thickness after photorefractive keratectomy (PRK) and the relationship between the corneal thickness and Haze.

方法 :采用美国DGHA型生物测量仪测量PRK术前及术后 1、3、6、12与 2 4月的角膜中心厚度 ,显微裂隙灯下观察PRK术后角膜雾状混浊的情况。

A new method is proposed to use optical projection and self-scanning photodiode array to measure the curvature, optical center thickness and diameter of contact lenses.

提出了一种采用光学投影成像和自扫描光电二极管列阵(SSPA)传感器实现隐形眼镜曲率、光学中心厚度和直径测量的新方法,基于此方法设计成功了一种新型隐形眼镜投影测量仪。

In order to test the thickness of lens center conveniently, this paper introduces a photoelectric instrument to measure the thickness by interference method and introduces the principle of this test method.

　透镜中心厚度是光学系统中的一个重要参数,其加工精度直接影响光学系统的成像质量。

Exploration and ideas in constructing the basic chemical experimental teaching centre;

基础化学实验教学中心建设的思路与探索

Changle Aircity—the Planning Concept of Subcentre of Fuzhou in the Future;

长乐航空城—未来福州市级副中心规划设想

The centre and depth of a class mapping with its square to be of type 2~∞;

一类2~∞映射的中心和深度

Composite education and research center,georgia institute of technolgy, USA;

美国乔治亚理工学院复合材料教育研究中心

Some Reflections on the Establishment of the International Travel Care Center;

国际旅行卫生保健中心发展的几点思考

Center of Left Ventricular Segmental Wall Motion Determined by Color Tissue Doppler Imaging;

彩色组织多普勒显像对正常人左室舒缩运动中心的观察