查询词典 arch

The posterior length of the dental arch changed significantly (P.001). The maxillary and mandibular arch shapes didn't change before and after treatment.

结果：上、下牙弓宽度在矫治前、后有显著差异(P.05)；上、下牙弓长度治疗前、后尖牙长度变化不明显，而第一磨牙长度具有显著性差异(P.001)；治疗前、后，上、下牙弓形状无明显变化。

The heritability of maxillary arch length (71.26%) was higher than the mandibular one (31.33%). The intraclass correlation coefficients were similar in dental crowding between MZ and DZ, with the lower in DZ. Low heritability of dental crowding was found in both maxillary (4.73%) and mandibular (10.3%) teeth. Conclusion The maxillary teeth MD, the mandibular teeth MD and the length of maxillary dental arch are controlled under strong genetic factors.

上下颌牙量遗传度较高，上颌为69.97%，下颌为75.73%；上颌牙弓弧长的遗传度(71.26%)明显高于下颌(31.33%)；单卵双生子和二卵双生子上下颌牙齿的拥挤度的对内相关系数较为接近，二卵双生子略低，遗传度很低，上颌为4.73%，下颌为10.3%。

Affected by the reverse-curve arch wires, the perpendicular force on the incisors were brought intrusively and on the molars were brought intrusively and distal upright; however, the canines and the bicuspids, in the perpendicular direction, moved along with the transformation of the angle and depth of the reverse-curve arch wires.

采用 ANSYS 有限元软件建立下颌牙列、牙周支持组织以及不同角度、不同弧形深度的0.46 mm ×0.64 mm 不锈钢下颌标准弓形摇椅弓的三维有限元模型，将摇椅弓变形前后的位移差作为荷载施加于有限元模型，通过多次迭代使其满足变形协调条件，计算出牙齿垂直方向的受力情况。

The investigated results indicate that arch slab has a good stable condition and is suitable for large flood discharge of high arch dam.

研究表明：拱形底板具有整体稳定性特征，它可能是高拱坝大流量泄洪水垫塘比较理想的保护型式。

The major content of this thesis are as follows:1 Performed FEM analysis before strengthening, and to find out the reason for the cracking and present a strengthening scheme;2 Performed nonlinear FEM analysis before and after strengthening, and to get the varying rule of the relative displacement between the on-site cast concrete side wall and that between the precast concrete arch and the floor, as well as the stress distribution of the gallery;3 Performed on-site observation experiments on the 7~th gallery, and to get the varying rule of the relative displacement between the on-site cast concrete side wall, as well as that between the precast concrete arch and the floor.4 The results of the computation were compared with those of experiments, which verified the effect of the strengthening.

本文的主要工作有： 1 对加固之前的廊道结构进行有限元计算，找出廊道底板开裂的原因，提出加固方案； 2 对加固前后廊道结构进行非线性有限元计算，得到加固前后廊道两现浇边墙相对位移、拱顶与底板相对位移随水库水位变化的规律和廊道结构的应力分布情况； 3 进行廊道加固前后现场观测试验，得到廊道两现浇边墙相对位移以及拱顶与底板相对位移随水库水位变化的规律； 4 对比分析加固前后现场观测试验与非线性有限元计算所得结果，论证加固方案的合理性，验证加固效果。

In this dissertation, the arch bridge was discretized by the FEM according to its structural characteristics with the spatial beam element simulating the tied beams, end floor beams, middle floor beams, arch ribs and the like and with the spatial link element simulating the suspenders to erect the bridges spatial mechanical computational finite element model.

该拱桥的拱肋主要承受压力，弯矩较小；系杆梁虽然是一拉弯构件，但由于布置有多道预应力筋，截面全跨受压；吊杆张拉力比较均匀，且吊杆张拉力对桥面系的线形控制作用比较明显；桥梁各构件受力和变形均在桥梁设计规范规定范围之内，表明桥梁结构受力合理。

In order to solve those problems, this article adopts the energy method to analyze the stability of the major frame of steel arch gate to make up the weakness in the current standards and found the calculating models of the stability of the whole major frame of the steel arch gate.

本文主要采用能量法对弧形钢闸门主框架线弹性稳定性进行分析与研究，建立单柱概化弧形钢闸门主框架整体稳定的计算模型，并通过选择合适试解函数，应用能量法给出特征值方程及弧门框架稳定性计算长度系数精确解的公式，提出一个基于该模型方便工程设计的实用计算公式。

In this dissertation, construction methods of long span arch bridges are reviewed firstly, and the lifting process of Shengmi Bridge's arch ribs is illuminated in detail. In succession, the status of study of wind-resistance in long span bridge construction is presented, and then the necessity of work of this dissertation is brought forward.

本文首先回顾了大跨度拱桥的施工方法，详细说明了生米大桥主拱肋吊装的施工过程，接着介绍了目前大跨度桥梁施工期间抗风研究的现状，提出了进行本文工作的必要性。

Smooth curved arch of the main line, symmetry and light Fuzhao four small arch, as if the four giant Yuhuan, decorated in the fall of the deck.

弧形平坦的主拱线上，对称地轻伏着四个小拱，仿佛四个巨型玉环，装饰在桥身两肩。

A numerical model is developed based on the arch dam nonlinear dynamic analysis program ADAP-88 to simulate the strengthening performance of damper measurers installed in arch dams.

本文在已有的拱坝非线性动力分析程序ADAP-88中加入阻尼器模型，开发完成了可考虑阻尼器抗震加固措施的数值分析程序，并将该程序应用于大岗山拱坝的非线性动力反应分析中。

Connectors are lines that can be anchored to particular places, called glue points , on the graphic object.

连接符，可固定在图形对象的特定的地方的线条。

Another way of putting it, too many agents have a say in each other's work, and bureaucratic rigor mortis sets in.

另一种表达是，太多的作用物在彼此的工作里都有话语权，官僚的僵尸开始抬头。