四边形的

The main drawback is the parallelogram prediction is not very precise.

它们的主要缺点是平行四边形预测不太准确，且受到所采用的遍历方法的制约。

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。

Determine a particular image is not in the development of the region, the region is an irregular quadrilateral.

详细说明：判断图像中的某一个点是不是在制定的区域内，该区域是不规则的四边形。

This paper describes two modified methods for triangular and quadrilateral meshing for finite element analysis of 2D electric machines.

该文描述了电机有限元分析中的 2种修正的三角形和四边形网格的生成方法。

According to the distribution characteristics of ocean environmental information such as SST and chlorophyll, which can be obtained in the form of two dimensional matrix, regular triangle network can be directly established and the original isoline can he generated in the triangle network.

根据海渔况预报过程中海水表层温度等海洋环境要素数据多规则网格分布的特点，介绍了四边形进行二角网格化并插值生成原始等值线的过程步骤，并利用Visual C++成功开发了渔场环境要素等值线的绘制模块。

In the 60% of the active area of 1×1 cm2 PSD, the position root mean square error was less than 3 μm , the position non-linearity was less than 0.05%. This modified equation can be fit for all tetra-lateral PSDs.

对于1×1 cm2的PSD，在60%光敏面的区域内均方根误差小于3 μm，非线性度小于0.05%，该公式适用于所有的四边形PSD，对于PSD的实际应用具有重要意义。

They are hydrogen and sulfur gases heated by intense ultraviolet radiation from the Trapezium's stars.

它们是被"猎户座四边形"发出的强烈紫外线加热的氢和硫的气体。

In this study,a simple method for preparation and characterization of three calcium zincate samples of different morphology was developed to improve the high-rate charge/discharge performance of zinc negative. The samples were synthesized,followed by direct reaction method and ball milling method.

为提高锌负极大倍率充放电的性能，先以直接反应法和球磨法合成了四边形、六边形和不规则三种形态的锌酸钙，并用X射线衍射光谱法和扫描电子显微镜法对其进行了表征，然后以恒电流充放电法考察了三者作为负极添加剂时对锌镍电池大倍率充放电性能的影响。

Compound 4 exhibits an unusual 2-D (4,6)-lattice-type network constructed by the [Co222]2- dimers and [Co(H2O)2]2+ units. As for Compound 5, four basic units link to each other form an approximately parallelogrammic pore, which constructed a 2-D covalent bond double-layers network.

化合物4展现出由[Co_2_2_2]~(2-)二聚体和[Co(H_2O)_2]~(2+)组成的具有4、6两种格子的不同寻常的二维网状结构，化合物5以类平行四边形孔道为基本单元构筑了二维共价键网络结构。

Based on the theory of hanging on laneway roof with roof bolt and taking the bolt as base point, this new preceding support can work in the free space on the laneway roof, allowing other equipments such as the entry-driving machine work at the same time, thus improving the utilizing efficiency of the laneway. On the cirques track of bolts, its three groups of claw, which are driven by hydraulic force, work as fulcrums to one another to push the support move forward.

基于顶板锚杆悬挂理论，以锚杆为基点，采用自制圆形梁为执道，以液压力驱动3组机爪互为支点实现超前支架在巷道顶部空间的迈步前移，采用具有顶板适应性的变运动方向平行四边形机构作为超前支护机构，来实现超前支架的支护作业。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。