Pre and post treatment arch width was measured.
比较治疗前后牙弓宽度变化。
Not all of dental arch width and length will relapse after retention.
经治疗和保持后，上下牙弓宽度和长度并非一定会复发。
The expansion of the arch was mainly caused by the mcrease of arch width.
牙弓的扩大主要是牙弓宽度的增加。
Conclusions: RE expanded anterior arch width especially the distance of mid-anterior.
结论：RE主要增加前段牙弓宽度，以中切牙间距离最明显。
Objective: To investigate the effects of tooth extraction on dental arch width and alveolar bone width.
目的：研究拔牙矫治对牙弓宽度和基骨宽度的影响。
CONCLUSION: the dis-coordination of the dental arch width in maxilla and mandible has an affinity with periodontal disease.
结论：上、下牙弓宽度不调与牙周病有密切关系。
Results: After treatment, in maxilla the arch width and alveolar bone width between canines were in creased(P<0.01), those were decreased between second premolars(P<0.01 ).
结果：上颌矫治后尖牙间牙弓宽度和基骨宽度明显增加（P< 0 .0 1） ，前磨牙间牙弓宽度和基骨宽度明显减小（P< 0 .0 1）。
Objective The objective of the study is to obtain the data of the arch width of the children in Zhenghe, Fujian, and to know the development regularity and characteristics of the growth of the tooth.
目的 了解福建省北部地区政和县儿童牙弓宽度，为研究当地儿童牙弓宽度生长发育的规律和特点提供依据。
The height of crowns, the center height of clinical crowns, and the width and length of the dental arch were measured with a digital vernier calliper.
用数显游标卡尺测量实验组模型牙冠高度，牙弓宽度和长度，计算出临床冠中心高度，并与对照组进行对比分析研究。
Arch forces coefficients and fluctuating buffeting forces are mainly decided by the space width ratio and the relatively vertical displacement.
双拱的静力三分力系数、变异性以及受湍流度的影响等均与两拱间距宽度比及竖向相对位移有关。
Result The increase of width of dental arch and basal bone has statistically significant difference.
结果治疗后牙弓、基骨的宽度比治疗前增加，统计学分析有显著性差异。
PU's equilibrium arch theories express: under the certainly geology condition , landslide high degree is direct proportion with the dig width.
普氏平衡拱理论表明，在一定的地质条件下，塌方高度与开挖宽度成正比。
When the width is very close to or much greater than the span of slab arch bridge, it is called Super-wide slab arch bridge.
当板拱桥的宽度与跨度接近，甚至其宽度大于跨度，这类板拱桥称为宽体板拱桥。
The width of arch or cantilever and the calculation of shear stress are also investigated.
还探讨了第六向拱和梁宽度的取法，及五向、六向调整时剪应力计算方法；
However, the width of an arch has a limitation which leads to the long span archs lateral stability lower because of its small ratio of width and span.
但由于拱体的横向尺寸总是有限的，往往使得大跨径拱桥的宽跨比很小。
The influence to stress of skew arch bridge was studied by changing the abutment torsional stiffness and width-span ratio.
通过改变桥台抗扭刚度和宽跨比，研究对斜交拱桥受力的影响。
The influence to stress of skew arch bridge was studied by changing the abutment torsional stiffness and width-span ratio.
通过改变桥台抗扭刚度和宽跨比，研究对斜交拱桥受力的影响。
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