查询词典 refraction

METHODS:The CCT and ocular axial length were measured by ultrasonic,IOP by non-contact tonometer,refraction by keratometer in 252 eyes of 126 cases with high myopias,respectively.

根据近视屈光度不同分为4组，即按等效球镜分为：1组-6.00D≤屈光度7.00D，72眼；2组-7.00D≤屈光度8.00D，80眼；3组-8.00D≤屈光度9.00D，48眼；4组≥-9.00D，52眼。

Methods A total of 86 eyes of successful rhegmatogenous retinal detachment with a higher encircling scleral buckle underwent A-scan and keratometer examination before surgery as well as l week,4 and 12 weeks after surgery.The refractive factors included the depth of anterior chamber,thickness of lens,axial length of eye,corneal curvature and refraction of eye were detected pre- and post-operatively.

用眼科超声仪、角膜曲率仪、验光仪等对巩膜环扎加压眼内嵴高为4～6 D的86例原发性视网膜脱离患者的86只患眼手术前1天及术后第1，4，12周时前房深度、眼轴长度、晶状体厚度、眼屈光度、角膜曲率等进行测量并将结果进行比较。

Methods Sixty students(120 eyes)with myopia(within-2.50D)were selected.visival acuity,cycloplegic refraction,keratometer,ocular axis,stereoscopic vision,and phoria strabismus were observed before and after 1～1.5 years wearing Anti-myopia Glasses.

方法60例(120眼)近视度在-2.50D以内的中小学生，观察其戴镜1～1.5年后的裸眼远视力、屈光检查结果、角膜曲率、眼轴长度、立体视觉及隐斜度的变化。

The long-term outcomes of highly myopic patients with borderline corneal thickness after LASIK were less stable and predictable. The regression was probably related to the preoperative refraction, age, corneal thickness and keratometry readings.

高度近视薄角膜患者LASIK术后的远期稳定性较低，可预测性较差，术后屈光回退可能与术前屈光、年龄、角膜厚度和曲率的改变有关。

The physical dimensions from ultrasound and keratometry,included axis length,anterior chamber depth,lens thickness,vitreous length and cornea refractive power.Both axis length and vitreous length were significantly correlated with refraction （correlation coefficient of 0.822 and 0.823,respectively）.

以13～25岁青少年为研究对象，应用眼科A型超声生物测量仪及角膜曲率计，由SAS软件支持，对240例近视眼屈光程度和屈光各要素（眼轴长度、前房深度、晶体厚度、玻璃体腔长度、角膜屈折力）测量值进行分析。

The study of combined refraction and diffraction of multidirectional waves are investigated by an extensive 3-D model test and the numerical simulation.

采用模型试验和数模计算相结合的方法，研究了多向不规则波的折射-绕射联合作用。

The reflection and refraction of traveling wave are quite complicated at the sheath-crossing point of high voltage power cable, due to its remarkably noncontinuous surge impedance.

高压电缆的金属护套交叉互联导致行波在多个波阻抗不连续点产生了复杂的折反射行为，这对高压电缆线路的行波故障测距产生很大的影响。

30 eyes of superficial corneal diseases including corneal dystrophy 12 eyes,scar after infection 7 eyes, dimmer nummular keratitis 6 eyes,scar after trauma 3 eyes and band degeneration 2 eyes were treated with PTK, and examined the uncorrected visual acuity,best corrected visual acuity and refraction respectively at one week,one month,three months and six months after PTK.The analysis of variance and chi-square test were used.

对角膜浅层病变30眼，包括角膜营养不良12眼，感染后角膜瘢痕7眼，钱币状角膜炎6眼，外伤性角膜瘢痕3眼和角膜带状变性2眼行PTK治疗，于术后1周、1、3、6月分别检查裸眼视力、最佳矫正视力和屈光状态等并回顾分析其疗效。

As the result of theoretical analysis and practical test, the systematic error corrections of the second-order level measurement must include collimation error correction, refraction error correction and orthometric correction (altitude over more than 50 m in the examining area).

经理论分析与实际测试后发现二等水准测量须做视准轴误差、折射误差与正高改正（测区标高超过50公尺以上），而二等水准测量，则须加人视准轴误差，测区标高超过100公尺以上，亦需加人正高改正。

The structural parameters involve distribution coefficient,molecular volume,molecular surface area,solubility product,molar refraction and parachor.

选取体积参数、分配系数等分子总体特征参数表达分子结构[1]。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。