查询词典 decentration

However, the accuracy of this method is doubtable due to the calculation of the decentration and rotation determined by only three reflected images (cornea, anterior and posterior surfaces of crystalline lens).

因为此方法乃是利用Purkinje image所产生的三个反射光点(角膜前缘，水晶体前、后缘)来决定水晶体的离心及旋转，因此其精确性令人质疑。

Based on the eye model proposed by Hwey-Lan Liou,the impact of intraocular lens with different spherical aberration over same optical zone decentration and tilt on performance of human eye was analysised with ray-tracing method using ZEMAX software.

南开大学现代光学研究所光电信息技术教育部重点实验室，天津 300071基于Hwey-Lan Liou人眼生理模型，采用光线追迹的方法，分析了相同孔径下具有不同球差的人工晶体在眼内的倾斜和偏心对人眼视功能的影响。

The optical measurement of decentration is of great significance to detection, fixing and regulating of an optical system.

光学中心偏测量在光学系统的检测和装校中具有重要的意义。

Decentration had no change with time. There was no statistical significant difference between PRK and LASIK.

两组 术后偏中心距离及方位不随时问推移而改变，与PRK和LASIK 的手术方式无关。

Fourthly, I have discussed the method to adjust torsion through presetting decentration of support abutment, and analyzed the influence on the superstructure of it.

再次，讨论了预应力曲线梁桥预设支座偏心调整扭矩的方法，分析了支座预偏心对上部结构内力的影响。

A mathematical model of optical axis fitting is put forward here. The model combines analytic method and numerical analysis method together with consideration of the actual decentration measurement.

提出一种光轴拟合的数学模型，该数学模型结合了解析方法和数值分析方法，考虑了中心偏测量的实际情况，在严格的数学模型基础上做了合理的简化。

Children' s ogecetrism stems from biological ability precipitated in racial evolution and show tendency of decentration.

这种精神特质的发生与发展根源于儿童个体所携带着的种族进化的生物性积淀，并伴随后天社会性文化的影响而表现出不断去自我中心化的过程。

Results The mean decentration from the pupillary center to ablating center was 0.266mm. In both eyes, the mean decentration was located supernasally.

结果 术后1个月切削区中心偏离瞳孔中心的距离为0.266 mm，双眼平均偏离瞳孔中心的方向均为鼻上侧。

Results: Of the slight keratoconus group: the above indexes significantly decreased(P＜0.05). Of the moderate group: the above indexes, except for the apex decentration distance significantly decreased at 12 months and more evidently at 18 months. Of the severe group, the K value significantly decreased at 12 months and other figures remained unchanged. However, all the indexes significantly decreased except that the apex decentration distance remained unchanged at 18 months.

结果：轻度组，配戴RGPCL后角膜散光、锥顶K值、锥顶偏心距离、SRI、SAI较配戴前均有显著性降低（P＜0.05）；中度组，除12个月时锥顶偏心距离、角膜散光值较配戴前无显著变化外，其他各项参数亦有明显降低，18个月时下降更为明显；重度组，12个月时除锥顶K值显著减小外，其他参数变化不大，18个月时除锥顶偏心距离的变化不显著外，其他参数显著降低。

The average tilt of IOL in PMMA group is 2.57±1.34° in 8 weeks after surgery, and the average decentration of IOL is 0.41±0.18mm; the average tilt of IOL in silicon group is 4.25±2.37° in 8 weeks after surgery, and the average decentration of IOL is 0.72±1.04mm.

PMMA人工水晶体组在术后八周时平均倾斜度为2.57±1.34°，平均中心移位0.41±0.18mm；Silicone组则平约倾斜度为4.25±2.37°，平均中心移位为0.72±1.04mm。

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％。