So we need to get embryonic stem cells to form surface cells.
那么，我们就应该从表层细胞中提取胚胎干细胞。
The antenna base includes an arc form surface, a receiving antenna and a clump weight.
天线座具有一弧型表面并包括一接收天线及一配重 块。
The step error and line error of free-form surface of projecting NC machining were analyzed.
分析了自由曲面三坐标投影法数控加工的步长误差和行距误差。
This paper presents a new discrete model of NC path generation for free form surface machining.
提出一个面向曲面nc加工刀位计算的曲面离散基本单元模型及其误差控制方法。
Free form surface is most important feature to shape of product such as plane, automobile, motorcycle.
自由曲面是工业产品，尤其是飞机、汽车、摩托车等行业产品外形的重要特征。
On the basis of above research, the measuring error compensation method for free-form surface is proposed.
在此基础上，进一步提出了自由曲面测量误差的补偿方法。
Parallel Machine Tool; CAD Variation Geometry; Euler Angle; Kinematics; Statics; Free-form Surface; Forward position.
并联机床；CAD变量几何；欧拉角；运动学；静力学；自由曲面；位置正解。
Engineering installations and necessary data to impel cooling pond to form surface-flow for heat loss have been given.
给出了促使冷却池形成面流散热的工程设施和必要的试验数据。
The small measuring field of sensor unit is the key problem in the free form surface measurement of large scale objects.
本文针对大型物体自由曲面测量中，传感器单元测量区域小等问题，提出了一种基于粘性目标实现空间图像拼接的方法。
This paper presents a developed approach for computing the offset of free-form surface using an adaptive sampling algorithm.
应用基于形状的自适应采样算法，给出了一种自由曲面的偏置算法。
It is designed with heavy workload and machined with high difficulty as its profile is a kind of free-form surface in space.
由于叶片的型面是一种空间自由曲面，因此设计工作量大、加工难度高。
First, the principle of perspective transformation and its application in the texture mapping of free-form surface are presented.
首先介绍透视变换和透视纹理映射原理，并简要分析其在自由曲面纹理映射中的应用。
Marine propeller is a type of free form surface part. Its design and manufacture precision decide ship's thrust efficiency directly.
船用螺旋桨是一类典型的自由曲面零件，它的设计和制造精度直接决定了其推进效率。
In our example, on the editor's free-form surface (FFS) you will create nodes for a Web page named index.jsp, result.jsp and error.jsp.
在我们的示例中，您将可以在编辑器的自由格式表面(FFS)中为名为index . jsp、result . jsp和error . jsp的web页面创建节点，而这些页面现在并不存在。
The chemical etching method wa applied to form surface texture of multicrystalline silicon in order to reduce the reflectance of the surface.
为了降低光在多晶硅表面的反射，采用化学腐蚀法在其表面制备了绒面。
Based on the existing problems in free-form surface reconstruction, surface digitizing and parametric optimization of random points are probed.
针对自由曲面重构建模中存在的问题，对曲面数字化及离散点参数优化技术进行了研究。
It is that the measurement point can be predicted via the arc extrapolation method and can be adaptive to sense the change of the free-form surface.
从测量速度和精度两方面考虑，提出采用圆弧切线外插算法控制激光束跟踪扫描，实现曲面的自适应跟踪测量。
Meanwhile, it is required that the free-form surface modeling must be able to change the freedom of local and meet all kinds of design requirements.
同时，要求自由曲面的造型必需能够局部地自由加以变更，使其符合各式设计需求。
A stereovision inspection system for measuring free-form surface is introduced which consists of coordinate measuring machines (CMM) and a laser probe.
介绍了利用安装于三坐标测量机CMM上的激光测头测量自由曲面的立体视觉检测系统。
In the digital measurement for free-form surface, image mosaics are needed to achieve the whole measurement for the small measuring field of sensor unit.
自由曲面数字化测量中，由于传感器单元测量区域小，所以实现整体测量需要进行多次的图像拼接。
Through measuring cylindrical section and surface of gauge block, this system is viable to measure free-form surface and high-reflective metallic surface.
对圆柱正截面和量块表面的测量试验验证了该测量系统对自由曲面和金属强反射表面测量的可行性。
In the field of measurement for free-form surface, it is a hot topic how to obtain the shape information as more as possible by the certain sample points.
如何用最少的测量采样点提取最多的曲面信息是曲面检测领域的热点研究问题。
Physics based modeling is one of the keen free form surface modeling method at present, and it should be a practical surface modeling method in the future.
基于物理的造型方法是当今曲面造型研究的热点之一，并可望成为今后曲面造型的实用工具。
The new method of re-construction of free-form surface which takes full advantage of conventional design and reverse-engineering is introduced in this paper.
介绍了将逆向工程与正向设计结合实现自由曲面模型重构的新方法。
At present, how to constitute the last 3d free-form surface model rapidly is one of the important subjects about the last design and the sole mould manufacture.
目前，如何快速建立鞋楦3d自由曲面模型是鞋楦设计制作及鞋底模具制作的重要课题之一。
The calculative precision of the cutting breadth has a significant effect on the machining precision and the machining efficiency for free-form surface machining.
在自由曲面加工中，行距的计算精度直接影响着曲面的加工精度和加工效率。
A novel method is proposed to calculate the minimum distance from tool to free-form surface, to solve tool interference problem in 5-axis nc sculptured surface machining.
提出了一种求解曲面到刀具极值距离的方法，以解决曲面5轴数控加工中刀具与曲面的干涉问题。
A novel method is proposed to calculate the minimum distance from tool to free-form surface, to solve tool interference problem in 5-axis nc sculptured surface machining.
提出了一种求解曲面到刀具极值距离的方法，以解决曲面5轴数控加工中刀具与曲面的干涉问题。
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