Objective: To observe the changes in human corneal thickness before and after laser in situ keratomileusis ( LASIK), and discuss the effect of extra loss of corneal thickness on eye visual acuity.

I can see I'm gonna have to work extra hard.

我现在知道了我得下大功夫。

You'll have to work extra hard to make up for it.

你们得更加努力工作来弥补。

She tried extra hard.

她特别努力。

It was discovered that ( 1) the extra electron and hole injected by the applied electric field make the lattice relaxation, and bipolaron excitons are formed.

发现外电场注入的额外电子和空穴使电致发光高分子晶格弛豫，形成双极化子激子；

Even for a few days after the time switch, motorists should exercise extra caution behind the wheel, especially commuters who have worked a long day.

即使在夏时制结束后的数日内，驾驶员在驾驶时也应当格外小心，尤其是工作了一白天的上班族。

Hospitals have to invest in extra wide beds, wheel chairs, patient lifting devices and extra staff to help lift and transport patients.

医院不得不投资购进超宽的床位、轮椅、抬降患者的设备以及额外的工作人员来帮助抬和运送患者。

With the simulation calculation of dynamic model, it indicates the extra eccentric mass of wheel is the main reason for shimmy.

通过对动力学模型的仿真计算，发现车轮过大的偏心质量是导致摆振的主要原因。

Bringing forward the arithmetic for differentiating and analyzing the extra slope of wheel load signal;

提出汽车轮载信号的特征斜率辨识算法；

I asked the florist for ten roses and he gave me a dozen for good measure. Measurement of the lateral strain can be accomplished using a lateral extensometer.

我向花商购买10枝玫瑰花，他给了我12枝，作为额外增补。侧向应变可用侧向引伸仪来测量。

The Split-tuble Multiple-Point Borehole Extensometer

缝管式钻孔多点位移计

The Principle and Its Application of Type WRM-3 Multi-Point Borehole Extensometer

WRM-3型钻孔多点位移计的结构原理与应用

Slope deformation character analysis based on monitoring results of multiple multi-point borehole extensometer

基于多点位移计监测成果的坡体变形特征分析

The early extensional fault controlled the structure systems, forming a series of compound structures of horst and graben and sedimentary facies in which many early sedimentary characters on slope, such as glide deformation and clastic flow can be seen.

早期伸展断层控制了同期的构造和沉积特征，形成一系列复式地垒和地堑的结构，在斜坡带见滑动变形、碎屑流等构造现象。

Forming during Yanshanian period and influenced by the basement tectonics, the main structure styles in the research area are subdivided into three types& compressive fault block, extensional fault block, and thrust fold.

研究区主要的构造样式是在燕山期形成的，但也受到了基底构造的直接影响，所以比较复杂。其构造样式可以分为挤压块断、伸展断块、逆冲褶皱三种基本类型。

Subsidence curve of the intercontinental foreland basins consists of two sections which are different from extensional fault depressions, the first section is a gentle curve of total subsidence and tectonic subsidence;

先缓后陡的两段式沉降曲线；

However, the extensional fault which had strong activities in the Eocene or even in the Paleocene, become non-activity from Neogene to Quaternary.

而盆地区的伸展断层则在始新世甚至古新世就有强烈的活动，而在新近纪一第四纪时期基本不活动。

The extensional fault systems are believed to be developed through the Cambrian, Ordovician, Early Silurian, Middle-Late Jurassic, and Paleogene.

伸展断裂系统发育于寒武纪、奥陶纪、早志留世、中-晚侏罗世和古近纪。

In extensional fault, there are a lot of fluid inclusions with bigger size of grains and wider range ratio of vapor to liquid.

张性断裂流体包裹体数量多，粒径大，气液比变化范围大，常伴随出现沸腾包裹体群；

Sand Box Analog Models of Extensional Fault Systems

伸展断层系统的砂箱模拟实验

The results showed that drop deformation and breakup were sensitive to both shear and extensional flow fields. Extensional flow was more effective than shear flow in generating well-developed laminar PA6 phase.

结果表明：分散相PA6液滴的形成和破裂对剪切与拉伸流场的作用非常敏感，在拉伸流场作用下，更容易形成层状PA6分散相。