四边形的

To improve the efficiency of finite element analysis and calculation on building structure, a quadrilateral mesh generation algorithm of building structure model is proposed.

为提高建筑结构有限元分析计算的效率，提出建筑结构模型的四边形网格生成算法。

It was also shown that both accuracy and convergence could be ensured by 4-node quadrilateral element.

同时表明，采用四节点四边形单元能够保证数值解的准确性且具有良好的收敛性。

The reconstructed surface is primarily affected by the quadrilateral meshes and can be improved by introducing penalty function.

其中，影响重构质量的关键因素－四边形网格划分问题，可以通过惩罚项的引入得到改进。

The anatomic location of cochlea is becoming more and more precise and exact from triangle to quadrilateral method.

从最初的三角法到夹角法再到四边形法，耳蜗的解剖学定位越来越精细准确。

Leaf blade reniform; petals not rhomboid, margin fimbriate proximally or throughout.

叶片肾形；全部的花瓣并非平行四边形，边缘流苏状下部的或。

Petals not rhomboid, margin fimbriate proximally or throughout.

全部的花瓣并非平行四边形，边缘流苏状下部的或。

Leaf blade broadly oblanceolate to narrowly ovate; petals rhomboid, margin subentire or undulate

宽的叶片倒披针形的到狭卵形；花瓣平行四边形，边缘近全缘或波状 53 P。

The bright central region is the home of the four heftiest stars in the nebula. The stars are called the Trapezium because they are arranged in a trapezoid pattern.

图中明亮的中心区域是星云中四颗成熟的恒星，他们组成了一个梯形，我们称之为猎户座四边形。

Results The superior wall of cavernous sinus, longitudinal trapezoid in shape, was limited laterally by anterior petroclinoid ligament and lateral margin of anterior clinoid process, and medially by the dura of the diaphragma sellae, anteriorly by the base of anterior clinoid process and the falciform dural fold, and posteriorly by the posterior petroclinoid ligament.

结果 海绵窦上壁呈纵长的四边形。外侧界为前床岩韧带和前床突外缘；内侧界为鞍隔的硬膜缘；前界为前床突基底部和镰状硬膜皱褶；后界为后床岩韧带。

These are the square envelopes with slots of 10mm, 5mm and 0mm. The critical heating power of the two slotted square envelopes are both 21 Watts, but for the case of the unslotted envelope it is much smaller.

对圆内四边形开缝为10mm，5mm，0mm三种情形，实验结果表明在实验Ra范围内，存在振荡解，其中两种开缝情形下稳态解转变为振荡解的临界加热功率都是21W，而开缝为零的情形下临界加热功率则要小得多。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。