valley bottom

valley bottom的基本解释

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谷底, 谷地

与valley bottom相关的网络例句 [注：此内容来源于网络，仅供参考]

The local river valley cultural tourism researches contain the shortage of three aspects: Did not put forward the concept of the river valley cultural tourism exclusively; Did not thoroughly and delicately discuss the river valley cultural tourism development combining with the river valley characteristics, the cultural characteristics; describing is a lot but quantitative analysis is little, the cultural tourism studies disjoints with river valley, the conclusion of river valley culture tourism development is little.

国内流域文化旅游研究有三方面的不足：未专门提出流域文化旅游的概念；未结合流域特点、文化特点深入细致地论述流域文化旅游开发；描述性多定量研究少，文化旅游研究与流域脱节，流域文化旅游发展的概括性结论少。

Secondary stress field resulting from valley cutting is basically symmetric about the valley central line hut not of axial symmetry . From top to foot of valley wall , the tangent stress and the width of high tangent stress zone get gradually big , reaching maximum at the valley botton .

沟谷的下切形成的二次应力场除了关于沟谷中线基本对称外，不具备轴对称特征，从坡顶到坡角，切应力高值区内切应力量级和高值区的宽度逐渐增大，在沟谷正下方达到最大，甚至有可能突然增大。

The results show that space finite analysis results are close to test ones, bottom chords suffer axial force and large in-plane bending, and the max stress is nearby each middle internode. The max stress of node crossbeams occurs in No.2 bottom flange, and that of internode crossbeams happens in ones lying in the middle of every internode. The concrete slab is in tension at the longitudinal direction, and also suffers bent at vertical loads. The degree of completely-composite model taking part in the combined actions is about 55%, while that of semi-composite model is 42%-43%. The combination of concrete slab and bottom chord increases the degree of floor system taking part in the combined actions, lightens the burden of bottom chord, and reduces out-of-plane bending of node crossbeams especially the ones near bridgehead. Stress and displacement of main truss can be evaluated by a equivalent plane rigid frame in preliminary design, and effective stiffness of bottom chords are composed of original ones and concrete slab, and the concentrated load from deck can be translated into uniform load.

研究结果表明：空间有限元分析结果与试验结果较吻合；下弦杆受到轴向拉力和较大的面内弯矩作用，各节间最大应力出现在节间中点附近；节点横梁最大应力发生在横梁2的下翼缘，节间横梁最大应力发生在位于端节间中部的小横梁上；混凝土板顺桥向整体受拉，并在竖向集中荷载作用下产生弯曲变形；全结合模型大部分节间内的桥面板参与主桁共同作用的程度为55%左右，半结合模型桥面板的参与程度为42%~43%；桥面板与下弦杆结合能够增加桥面板的参与程度，减轻下弦杆荷载，减少节点横梁尤其是靠近桥头横梁的面外弯曲；对桥梁进行初步设计时，主桁杆件的位移与内力可按照1个等效的平面刚架计算，下弦杆的等效刚度由原下弦杆截面和混凝土桥面板截面组合而成，桥面荷载可转化为均布荷载施加。

与valley bottom相关的网络解释 [注：此内容来源于网络，仅供参考]

bottom fermentaion yeast; bottom yeast：底层酵母

底层发酵作用 bottom fermentaion | 底层酵母 bottom fermentaion yeast; bottom yeast | 隐性同型合子 bottom recessive; recessive homozygote

Bottom land ,Bottom of tooth space C：齿槽底面(槽底)

Bottom clearance coefficient D顶隙系数 | Bottom land ,Bottom of tooth space C齿槽底面(槽底) | Bottom of tooth space C齿槽底

Square-cut bottom：平下摆

下摆Bottom, hem, lap, sweep, expansion, suso | 平下摆Square-cut bottom, square front, plain bottom, flat bottom | 斜下摆Slant-cut bottom