着地

Result: The knee joint angle of affected-side and unaffected-side of hemiplegic gait showed significant differences on knee flexions at heel-ground (4.49±6.16,14.02±8.49), Max. extension in stand phase (-0.89±3.86, 3.18±5.47), Max. flexion in swing phase (23.11±10.54, 30.28±10.52) and total excursion on sagittal plane (27.94±8.06, 28.94±10.10) comparing with healthy subject.

结果：偏瘫患者患侧和健侧膝关节初始着地时刻(4.49±6.16， 14.02±8.49)、站立相最大伸展角度(-0.89±3.86， 3.18±5.47)、摆动相最大屈曲角度(23.11±10.54， 30.28±10.52)、矢状面膝关节角度范围(27.94±8.06， 28.94±10.10)均与正常人存在显著差异。

The author ever saw with one's own eyes witnesses a child of 2 years old of toddle, the noise as a result of a shoe implement bad already, she to make another shoe gives out noise, when walking exert all one's strength the chela palm of a foot to walk downward, after that calcaneal criterion basically not touchdown, generation giving a person walks one kind " one foot is deep, one base is low " impression, fortunately the author discovers in time, reminded the parent to dismantle noise plant, the pose that the child walks just transforms somewhat.

笔者曾亲眼目睹一名2岁蹒跚学步的孩子，由于一只鞋子的响声器已坏，她为了使另一只鞋子发出响声，走路时便将一只脚的前脚掌使劲往下踩，而后脚跟则基本上不着地，给人产生一种走路&一脚深，一脚浅&的印象，幸亏笔者及时发现，提醒家长拆除了响声装置，孩子走路的姿势才有所转变。

I stops my car by actually applying my foot to the pavement.

我开车的时候刹车都是用脚——双脚着地！

The starting angle was small and the landing angle was big. Moreover, the speed of clearance was fast, causing little weight point changel.

2刘翔两次比赛第五栏的跨栏步步长小，起跨攻栏距离与下栏着地距离之比非常接近理论上的最理想比例。

"This form of landing causes almost no collision force," lead author Daniel Lieberman, an evolutionary biologist at Harvard University, said in an email.

&这种着地形式几乎没有碰撞力，&哈佛大学进化生物学家同时也是该研究的主要发起人 Daniel Lieberman在电子邮件中谈到。

Relaxing into the Center: When landing in the moguls it is important to relax into the center of mass.

向身体中心放松：当在雪包中着地时，要向身体中心放松很重要。

I told her that that was very impressive for her to pursue her passion（1） to play the piano.

我对她说，她如此执着地追求对钢琴的爱好，令人钦佩。

Jumpers and pole vaulters land in a pit filled with sand or foam rubber.

撑竿是由纤维玻璃钢制造，具有良好的柔韧性，跳跃项目的运动员和撑竿跳运动员在由沙子或泡沫橡胶作成的坑上着地。

The pole is made of fiberglass which is extremely flexible. Jumpers and pole vaulters land in a pit filled with sand or foam rubber.

撑竿是由纤维玻璃钢制造，具有良好的柔韧性，跳跃项目的运动员和撑竿跳运动员在由沙子或泡沫橡胶作成的坑上着地。

Our professional skills and dedication for the sake of the concept of customers has made us become a world-class trusted partner, and the main force in the fields of metallurgical, chemical, oil and gas, pulp and paper, power, food and beverage, pharmaceutical and other industrial production, process automation industry.

我们专业的技术和执着地为顾客着想的理念使我们成为世界级值得信赖的合作伙伴，是冶金、化工、石油天然气、纸浆与造纸、电力、食品与饮料、制药和其它工业生产、过程自动化的行业主力军，并为工业自动化产业作出了卓越的贡献。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐