地面压力

Objective: To investigate the effect of shoe heel height on the ground reaction force and the center of sole force.

目的：通过研究女性行走时地面反力和鞋底压力中心，探讨鞋跟高度对地面反力和鞋底压力中心的影响。

When the subjects wore shoes with different heel height and walked in different speed the ground reaction force and the track of the center of sole force were measured and analyzed quantitatively.

测量穿不同类型和不同鞋跟高度的受试者，在不同行走速度下地面反力的大小和鞋底压力中心，分析地面反力变化和鞋底压力中心轨迹。

To the wall with construction materials, articles posted above, on handrails and electrical shutter doors, Yao Wang Taiwan, by product description 9 with wooden dam, looked like the look of cement, from the ground to the top of the dam is within the white walls, projectors, DVD, audio equipment 10 fence, the laying of real grass, small stone embellishment, flower basket fence, equipped with VAG stress management system entities pipeline 11 Steel Bridge, the need to open the door into the car, you can remove the bridge, waterfall in the lateral bridge, and a straight line, the ground when the tunnel plate, the plate Below are the sink, sink, a ring-shaped water system 12 the ship has three sails, fixed line connections, at the top of a volume system, laying the ground mosaic, surrounded by lamps.

用建筑材料做墙，上面贴写真，有扶手下去，又电动卷帘门，有遥望台，有产品图文说明 9）大坝用木制，看上去像水泥的样子，从地面到顶部，大坝内是白色墙面，有投影仪，DVD，音响设备 10）围栏内铺设真草皮，小石头点缀，栅栏花篮，安装有VAG压力管理系统的实体管线 11）钢结构桥，需要开门进车时，可以把桥整体移走，瀑布在桥的外侧，直线而下，地面时洞洞钢板，钢板下面是水槽，水槽内有水形环系统 12）船上有三个帆，同轴连接固定，顶部有卷收系统，地面铺设马赛克，周围有地灯。

A new projectile-filling device was developed to realize the fracture perforating under the condition of high foramen density.

提出了一种新型装药结构并实现在高孔密条件下的复合射孔，所开发的产品进行了地面混凝土靶测试、地面动态压力-时间过程测试和现场应用试验。

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。

Analyzed on the tunnels that used EPB method in different soils, the more logical three-dimensional finite element model is based, which can reality represented the soil transfiguration. 3 Due to the engineering example, a 3D FEM simulation model was founded. The model was used to study the rules of soil deformation and surface settlement during shield tunneling. 4 The characteristics of loess include the module, conglutination force and inner friction angle of the loess, affected the soil deformation. 5 The influence factors to the surface settlements such as the depth of soil, the outer diameter of the shield tunnel, the released stress at the cutting face, the fill ratio of the shield tail void, pouring-slurry press, thrusts and lengths of shield and digging steps were studied using the FEM method. References is brought forward in the loess areas of Xi'an was proposed.

通过对不同土质条件下盾构法进行地铁隧道施工的有限元分析，全面反映盾构推进对土体变形的影响情况； 3根据有关勘测资料，建立合理的盾构法施工三维非线性有限元模型，对盾构法施工引起的地层变位和地表位移情况进行计算，分析了盾构施工引起的地层变形规律和地面沉降规律； 4研究了黄土特性(地基模量、粘聚力和内摩擦角)对盾构法施工中土体变形的影响； 5利用三维有限元对盾构施工过程中影响地面沉降的因素(覆土厚度、隧道外径、开挖面压力变化量、注浆压力、盾尾空隙填充率、开挖步长、盾构机的长度和推进力等)进行研究，为今后西安地区地铁的建设提供参考。

The test pressure should be to the maximum anticipated surface pressure during or after the cement packer recompletion.

水泥封割二次完井期间或之后，试验压力应达到预测最大地面压力。

Downhole throttling technology is to adjust downhole pressure through installing the throttle valve in an appropriate position on the tube. The gas flowing through the throttle valve is heated up by the geotherm and the conditions of gas hydrate formation are changed, so as to effectively prevent gas hydrate formation, decrease transportation pipeline pressure, eliminate attemperator, and reduce the cost of gas production.

井下节流技术将井下节流器置于油管某一适当位置来实现井筒节流降压，并充分利用地热对油管内流体加热，使节流后气流温度高于节流后压力条件下的水合物形成初始温度，从而达到降低地面管线压力，取消地面加热保温装置、降低气井开采成本的目的。

Based on the effect of the sanding on the bradenhead, the ground flow pipeline gtv and surface equipment in high pressure and high gas rate well in west Sichuan, and combination with actual engineering geologic characteristic and operation status, the paper analyzed the influencing factor of sanding in the fractured well, and put forward the countermeasures to effectively prevent sanding.

川西坳陷致密砂岩气藏拥有大量的高压高产气井，支撑剂回流出砂问题比较突出。由于气井压力高、产量高、流速快，加砂压裂后常出现支撑剂回流出砂的现象，对井口及地面流程管线闸阀、地面设备造成强烈的冲蚀破坏作用，已经严重影响到气田高压高产气井的正常生产。

Venus is a rocky world that is about the same size as Earth. But its climate is anything but Earth-like. It is a cloud-covered world where temperatures reach over four hundred degrees Celsius. The atmosphere of Venus is so thick that the pressure at the surface is about one hundred times that of Earth.

金星是一个岩石世界，它的大小与地球差不多，它是一个被气温高达摄氏400度高温的大气层所覆盖，金星大气层是如此之厚实，这种大气层给金星地面所带来的压力是地球大气层对地面带来的压力的100倍。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。