后屈

A stem is that part of the word-form which remains when all inflectional affixes have been removed.

词干是所有屈折词缀被去掉后所剩余的那部分。

Stem : A stem is that part of the word-form which remains when all inflectional affixes have been removed.

词干是所有屈折词缀被去掉后所剩余的那部分

Objective To observe and compare the changes in corneal sensitivity after photorefractive keratectomy and laser in-situ keratomileusis for myopia.

目的 观察和分析准分子激光屈光性角膜切削术(photorefractive keratectomy， PRK)和准分子激光原位角膜磨镶术(laser in-situ keratomileusis，LASIK)治疗近视后角膜知觉的变化。

The Lace-up group's center of pressure displacement quantity is bigger than other two groups,therefore its balance ability is also bad, therefore suggested the athlete when wearing ankle braces sports should inquire specialized doctor and the protection suggestion avoids injury.

人体在穿戴不同踝部护具执行单脚著地后迅速推蹬动作时， Lace-up和Air stirrup这两种护具在著地期间确实具有限制关节活动度的效果，但也因踝关节跖屈能力的下降造成人体著地时缓冲地面冲击力能力下降的现象，造成本研究结果在地面反作用力垂直分力Lace-up和Air stirrup组都较赤足组来的较大，著地时脚的负荷率Lace-up组和Air stirrup组都较赤足组来的较大，且Lace-up组在著地期压力中心偏移量也较其他两组大，故其平衡能力也有差异，故建议运动员在穿著踝部护具运动前应询问专业医师及防护员的建议以避免因此而受到伤害。

Objective To analyze the results of phacoemulsification cataract surgery in eyes that had refractive surgery and to compare the predictability of K value in Holladay Ⅱ formula of intraocular lens power calculation.

目的分析应用 HolladayⅡ公式计算角膜屈光手术后人工晶状体植入度数的准确性。

M moment of couple in the following sequence: intact, instability, Germany AESCULAP SSE hanger fixation and neotype shape memory alloy cervical hook fixation.

将标本固定于脊柱三维运动试验机上，施加2.0 N？m的纯力偶矩。测量标本的前屈、后伸、左侧弯、右侧弯以及左、右旋转等6个运动方向的运动幅度。

The 3D motion informationincluding ante-flexion,back-stretch,nearside bending,and starboard bending of the human cervical spine were measured for unstable,fixed,and fatigue loading states.

采用该方法分别对保存良好的人体颈椎标本在失稳、内固定以及疲劳3种状态下的三维运动情况(包括前屈、后伸、左侧弯、右侧弯4种运动)进行了测量，并以每种运动情况下的颈椎C 1-C 2节相互旋转角度衡量其内固定的效果。

The 3D motion information （including ante-flexion, back-stretch, nearside bending, and starboard bending） of the human cervical spine were measured for unstable, fixed, and fatigue loading states.

采用该方法分别对保存良好的人体颈椎标本在失稳、内固定以及疲劳3种状态下的三维运动情况（包括前屈、后伸、左侧弯、右侧弯4种运动）进行了测量，并以每种运动情况下的颈椎C1-C2节相互旋转角度衡量其内固定的效果。

The "reverse parabolic type" landing technique and "bending striding type" sprint technique have be-come important characteristics of modern sprint techniques. The importance of the views in the "hip power" theory and relaxation techniques for racing performance has been generally recognized by all.

后扒式"着地技术和"屈蹬式"短跑技术已成为现代短跑技术的重要特征；"髋动力学说的观点及放松技术对竞赛成绩的重要性已得到大家普遍的认可。

However, such issues as what effects will be produced by the "inverse parabolic type" landing technique on moving techniques in the entire supporting stage, how to smoothly connect sprint techniques on different racetracks, how to enhance the applicabil-ity of the "reverse parabolic type" technique on cinder and clay racetracks, and how to provide technical diagnosis and guidance for athletes at different levels according to their technical characteristics, figure conditions and com-mon technical characteristics of athletes at the same level, need to be further studied.

而"后扒式"着地技术对整个支撑阶段动作技术有何影响；如何衔接不同场地上的短跑技术、如何在煤渣跑道和泥土场地上提高"屈蹬式"短跑技术的适用性，以及如何根据运动员的技术特点、形态条件及同等水平运动员的共同技术特征，对不同等级运动员做技术诊断和指导等问题有待于进一步研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。