查询词典 barrel arch

A brief discussion on seismic design of high arch dams is made through the following three aspects:interaction of arch dams-foundation-reservoir water,dynamic stability of high arch dam abutment ,effect of transverse slots on seismic design of high arch dam,and those aspects referred to above is not enough for seismic design of high arch dam.

对高拱坝的抗震设计进行了分析，包括拱坝坝体-地基-库水动力相互作用分析、高拱坝坝肩抗震稳定分析、横缝对高拱坝抗震设计的影响，仅对高拱坝抗震设计研究的几个方面进行了概括总结。

The stress and stability analysis of arch dam and abutment are the main task of traditional arch dam design. Nowadays there are two kinds of analysis method to use. One method is the arch-cantilever load-distribution method, in which the arch dam stress and abutment thrust are calculated, while the stability of abutment is evaluated by rigid body method or other method. The other is FEM method, which evaluates the arch dam stress and stability of abutment at the same time.

作为拱坝常规设计的主要任务—坝身和坝肩的应力和稳定分析，当今大体有两套体系可用：①用拱梁分载法分析坝身应力和坝肩推力，结合刚体法或其他方法进行坝肩稳定审核；②用有限元法对坝身应力和坝肩稳定同时进行审核。

The system reliability analysis method of arch-bridge is presented based on the failure model of arch rib, which is the most important failure model of arch-bridge. The control sections of arch rib in the analysis of bearing capacity reliability are determined according to the "five-spot coincidence method", which is often used in arch-bridge design with Chinese code.

针对拱式桥结构体系中的主要受力构件—拱肋进行分析，借鉴拱桥设计中的&五点重合法&确定研究截面，进而根据该截面的不利情况确定荷载布置型式。

The internal forces of the main arch springers are calculated in different rise-span ratios of top and bottom arch ribs. The internal forces of arch ribs and deformations of main spans are calculated in 1/5, 1/4 rise-span ratios of top and bottom stacked arch ribs and in 1/5 rise-span ratio of dumb-bell arch ribs.

给出上、下拱肋为不同矢跨比情况下的主拱拱脚截面内力，当叠合拱桥的上、下拱肋矢跨比分别采用1/5、1/4与矢跨比为1/5的哑铃拱拱肋的内力和主梁及拱顶变形计算结果。

Barrel is the key part of artillery. In shot process, propellent gas of high pressure and high temperature flows in the tube at a high rate of speed, which brings an upheaval to the temperature field of the composite barrel. As to the composite barrel with metal inner, its poor thermal conductivity is more likely to cause uneven temperature distribution and bigger temperature gradient, to produce improper deformation and to make the work temperature of metal inner rise, all of which will affect the life span of barrel.

身管是火炮的关键部件，在火炮发射过程中，高温、高压的火药燃气在身管内成脉冲式高速流动，使身管受到急剧的加热，引起身管壁内的温度急剧变化，而对于带金属内衬复合材料身管，由于复合材料导热性能较差，更容易引起非均匀温度分布以及较大的温度梯度，产生不合适的变形，也会使身管的金属内衬的工作温度升高，从而使得身管的寿命降低，同时身管的发热会引起其刚度的变化，增大射弹散布。

The structure parameter influences on lateral stability, such as crankle rigidity ratio of arch rib, arch axis coefficient, arch high span ratio, lateral rigidity of bridge decking and arch rib ratio, the effect of non-orientedly conservative loadings of bridge deck, lateral wind loadings were discussed.

分析了拱肋的抗扭刚度与横向抗弯刚度比、拱轴系数、矢跨比、桥面系的横向抗弯刚度与拱肋的横向抗弯刚度比、桥面系横向刚度引起的非保向力效应、横向风荷载对单肋拱横向稳定的影响，并给出了相应的图表，为拱桥设计时拱肋的结构参数的选取提供一定的依据。

Main production: inflatable toys, inflatable air mold, inflatable arch, wedding arch, advertising balloons, sky balloons, inflatable cartoon, water walking ball cartoon festival, PVC Products, PVC model, inflatable products, inflatable products, inflatable advertising material, celebration supplies, inflatable model, action cartoons, celebration gas mold, products include inflatable Santa Claus, inflatable Christmas trees, inflatable tents, inflatable arch, rainbow arch, together color arches, arches Shuanglong to congratulate arches, Shuangfeng arches, God of Wealth,, Mickey Mouse, Lantern columns, balloon launch and so on.

庆典卡通、PVC产品、PVC模型、充气制品、充气用品、充气广告物、庆典用品、充气模型、行动卡通、庆典气模、产品包括充气圣诞老人、充气圣诞树、充气帐篷、充气拱门、彩虹拱门、拼色拱门、双龙拱门、恭贺拱门、双凤拱门、财神爷、金童玉女、米老鼠、灯笼柱、升空气球等等。

Dissections were performed on 1.2cm interval cross-sections of the thorax of 30 embalmed cadavers. The results showed 20.00±7.30%of the aortic arch and arch of the azygos vein at the same plane and 40.00±8.94%of the arch of the azygos vein at the level of concavity of the aortic arch.

为描述和阐明经主动脉弓平面横断层、纵隔内结构的解剖学特征，为医学影像CT、MRI提供解剖学依据，把经防腐固定的30具成年男性尸体制成间距为1.2cm的连续横断层标本，进行观察。

Methods Measurements were made in a group of 45 women volunteers aged from 22 to 45 years, who were satisfied with their breasts without any history of breast surgery. After the lateral arch of the breast as the reference value for breast size being chosen, breast-areola to nipple ratio was determined according to parameters measured as follows: weight, height, diameter of the breast, areola, and nipple, distances between the nipple and borders of the breast-superior, medial arch (to the medial end of the inframammary crease), lateral arch (to the lateral end of the inframammary crease), inferior arch (to the lowest point of the inframammary crease).

方法对45例22~45岁、对自己乳房满意且无乳房手术史的女性志愿者，分别测量体重、身高、乳头直径、乳晕直径、胸乳线(乳头至胸骨切迹连线距离)、乳房内侧半径(乳头至乳房下皱襞内侧止点连线距离)、乳房外侧半径(乳头至乳房下皱襞外侧止点连线距离)、乳房下半径(乳头至乳房下皱襞最低点连线距离)。

Change of arch width after extraction and nonextraction treatment;2. Effects on arch width after extraction and nonextraction treatment;3. Intercanine and intermolar arch widths and anterior arch depths of the maxillary and mandibular arches were measured.

结论与不拔牙矫治相比，拔牙矫治不会减小尖牙间牙弓宽度和前牙段牙弓长度而影响面部美观；但拔牙和不拔牙矫治都能引起磨牙间牙弓宽度的改变，可能影响疗效的长期稳定性。

Mostly dry conditions in the vineyards, with some heat and a drying wind, fostered good sanitary conditions and allowed producers to wait for optimum ripeness.

葡萄园通常环境干燥，温度较高，空气干燥，霜冻保证了良好的卫生状况，酿造商可以静待最佳成熟期了。

Environment factor effected the water vapor flux variation. Net radiation and ground heat were key factors to affect water vapor flux.

环境因子在很大程度上制约着水汽通量的变化，以净辐射和土壤热通量地温对水汽通量的影响最大。