位置

In order to get the optimal nesting position, this paper proposed the concept of gravity center NFP.

为了在NFP中进一步得到优化的靠接位置，在NFP的基础上提出了重心NFP的概念，通过选择重心NFP中的最低重心位置来确定零件的排放位置。

An artificial method of constrained coassembling process plan based on VRML model includes setting slide – rotary connection constraint; selecting artificial assembling body model; confirming constraint type of each component to its front or back end component in open or closed loop mechanism; calculating translation and rotary matrix of each component in moving course and its position parameter; generating time – order – path matrix and key frame as per time section; writing each key frame in reverse mode into interpolator of each component VRMC model; adding route in sequence between time and position sensors, position sensor and component form node for generating artificial picture.

本发明属于CAD协同产品设计技术领域，其特征在于：在网络环境下，设计者依托装在节点机上的三维VRML模型，以设计者与设计场景交互方式按照以下步骤实现有约束协同装配工艺规划：设定滑动转动联接约束；选定仿真装配体模型；确定开环或闭环机构中各零部件与它的前端和后端部件的约束类型；计算各零部件在运动过程中的平移和转动矩阵，再根据相应的约束计算运动过程中各零部件的位置参数；再据此生成零部件的时间-顺序-路径矩阵，按时间段形成关键帧；把各关键帧分别以逆序写入VRML各部件模型的插补器，依次在时间传感器和位置传感器之间、位置传感器和零部件造型节点间加入路由，生成仿真画面。

For tetra-lateral position sensitive detectors, the calculated positions obtained with the conventional equations of position calculation do not correspond to the real spot positions., and have serious pincushion distortion.

四边形位置敏感探测器的传统位置计算公式不能正确反映实际光斑位置，存在严重的枕形失真，需要进行复杂的修正。

On a Natural Pivot the Man will turn into CBMP and retain it; on the pivoting action the lady will achieve CBMP momentarily and lose it again almost immediately

在右轴转中，男士进入反身动作位置，并保持反身动作位置；在轴转动作中，女士暂时达到反身动作位置之后几乎马上结束这一状态。

With the method and the relation between the center of a circle and a triangle, the relation between the triangle and the circle can be determined rapidly, hence to quickly and correctly determine the position relation between the projections of the triangle plane and the tool in tool axis direction, and raise the efficiency of 3-axis NC machining.

借助于该方法及圆心相对三角形的位置关系，可以快速判别三角形与圆的位置关系，从而能据此快速、准确地判别三角片与刀具两者在刀轴方向投影的位置关系，提高3坐标数控加工干涉检查的效率。

Objective To explore the relationship between abnormal position gallbladder plica and gallbladder diseases. Methods There were 5 000 cases of gallbladder with plica during recent 11 years who were divided into 2 groups and whose data were analyzed retrospectively.

目的探讨胆囊皱襞异常与胆囊疾病的关系方法我科1995年1月至2006年10月共发现5 000例皱襞胆囊，根据其位置分胆囊皱襞位置正常组（2 500例）和胆囊皱襞位置异常组（2 500例），对其超声资料进行回顾性分析。

The TLC of them were concordance.They presented the same color fluorescence in the corresponding position at the ultraviolet light(365nm). After the vanillic aldehyde sulphuric acid ethanol solution developed, violet color spots presented at the same place. Reference substance of Polysaccharide presented violet color ,but in the corresponding position the crude and the prepared didn't show the spots . It proves that the chemical constituents of Polygala Root may not have changed after stir-baked with honey.

生远志正丁醇部位色谱和蜜远志正丁醇部位色谱基本一致：紫外灯（365 nm）下二者在相应位置呈相同颜色荧光，香草醛硫酸乙醇溶液显色后二者在相应位置的几个斑点均呈紫罗兰色，且远志皂苷元对照品斑点呈紫罗兰色，而在与其相应位置生远志供试品和蜜远志供试品均未检视到相应斑点。

The first parameter is the start position and the second parameter is the end position.

第一个参数是开始位置，第二个参数是结束位置，位置是从0开始计数的。

Numbers are written using positional notation, in which the digits are arranged in succession, the position of each digit has a place value

数字被使用在位置记法，这些位置被安排连续的数字，每一个位置都有自己的位值

Numbers are written using positional notation, in which the digits are arranged in succession, the position of each digit has a place value, and the number is equal to the sum of the products of each digit by its place value.

数字被使用在位置记法，这些位置被安排连续的数字，每一个位置都有自己的位值且位值等於每个数字按照本身位值的和。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。