矢的

On the basis of the probe and research into space analytic geometry and seeing from the students ' thinking characteristics , this paper has got a proof about three vector double vector product theorem .

本文通过对空间解析几何的研究和探讨，从学生的思维特点出发，给出一个有利于学生认知结构形成的三矢量的双重矢性积定理的证明

Methods: The sign object was put at each acromial end and clavicle end of normal acromioclavicular joint. And then acromioclavicular joint was tested the locations in abducetion+superduct 、 endoduction 、 anteflexion 、 post-extention 、 external and interior rotation by using 3D- laser scanning camera .Computer calculate the rotation of the two sign objects in x 、 y 、 z axis(x delegate clavicle axis,y delegate coronal section ,z delegate sagittal axis).

通过在正常活体肩锁关节的锁骨端及肩峰端分别安装一个激光照相扫描仪的探测端子，3D-激光扫描相机扫描肩关节在做前屈+上举，后伸，外展，内收，外旋及内旋等不同位置下两端子的位置，通过计算机计算出两端子在X、Y、Z轴（X轴代表锁骨的长轴，Y轴为冠状面与X轴垂直轴，Z轴为矢状轴）上的旋转情况。

In addition,discussion is undertaken for the 60 metre width double-layer barrel vault about the structural steel weight and cot affected in different grid size、rise/width ratio and different loads.It also includes the effect of wind loads on those of 100 metre width structure.The application in the roof of coal storage of barrel va

以60m跨度的双层圆柱面网壳结构为对象，研究了不同网格尺寸、不同矢跨比、不同荷载对结构的用钢量、造价等结果的影响；以及不同风荷载对100m跨度网壳计算结果的影响；比较分析了三心圆柱面网壳与圆柱面网壳结构在电厂干煤棚中的应用。

Those images boasted bronzed children racing joyfully down a bank of emerald green grass towards a vast expanse of water so blue that the cornflower sky above looked dazzled.

在照片里，晒得黝黑的孩子欢快地沿着长满翠绿色青草的湖岸追逐，一直跑到一片开阔的湖水，蓝色的湖水使头顶上矢车草色的天空显得是那么耀眼。

In the present study, only T2-weighted images were aailable for assessment; T1-weighted images had been taken in the axial plane for measurements of erector spinae muscle size,24 and it was not feasible to also obtain T1-weighted sagittal images.

在我们的研究中，仅有T2加权像被用来进行评定，我们做的轴面T1加权像被用来测量骶棘肌的大小了[24]，而同样也获得矢状位的T1加权像是不太可行的。

Using the two-stream fluid model, the linear dispersion relation is derived assuming a two-dimensional spatial geometry. Two cases are considered, one is that the 2D spatial geometry is defined by the plane containing the two counterstreaming electron populations and the perturbation wave vector , and the other is that the geometry is defined by the plane being vertical to the two counterstreaming electron populations .

对高能束流和电子回流构成的双流系统，建立冷等离子体流体模型，采用简正模分析方法，分别考虑扰动波矢在平行于电流传播方向的平面上和在垂直于电流传播方向的平面上这两种情况，推导了不稳定性的色散关系。

Experimental results disclosed that the upper limit on the photon mass was 1.2×10-51g, and this figure, collected by Particle Data Group in 2004, has improved almost 20-fold compared with that of the static torsion balance experiment.

该数值不仅将国际上扭秤静态实验结果提高了约20倍，而且调制的实验方法还有效地克服了扭秤静态实验中实验结果对宇宙磁场矢势与地球自转轴之间夹角的依赖关系，并且极大地抑制了各种周日背景干扰的影响，提高实验的置信水平，该实验结果于2004年被国际粒子物理数据组收录。

The relationship between parasagittal meningiomas and draining veins of brain surface can be identified by MR brain surface anatomy scanning, which can evaluate the draining veins correctly and direct to protect the key draining vein, especially the draining vein in functional area of brain surface. It plays important role in the protection of neurological function and the recovery of the postoperation.

磁共振脑表面成像技术能在术前明确矢状窦旁脑膜瘤与脑表面回流静脉之间关系，可在术前对患者肿瘤表面脑回流静脉做出正确的评估，对脑表面重要回流静脉的保护提供了准确的影像学依据，对患者神经功能的保护及术后恢复起到重要作用。

Go to Yu at people Shi of Liaoning don't grow hard-working intelligence and courage and judgment of market to applause to drink colourfully in the meantime, the economists change more social structure and system that the attention puts small merchandise city development process in China and social economic meaning.

在辽宁人民矢至不渝培育市场的勤劳智慧和胆识鼓掌喝彩的同时，经济学家们把更多的注意力放到中国小商品城发展历程中的社会结构和制度变迁及社会经济意义方面。

To get properly oriented, view the MPEG movie ("cine" button, next to the sagittal image) of the entire dataset, and find the central sulcus by first locating the marginal sulcus in the medial parietal lobe.

要正确定位中央沟，可以观看全部数据的MPEG影像点击矢状面影像旁的&cine&），并首先确定位于顶叶中部的边缘沟的位置。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。