双层

Determination of neutral plane position is the key issue in the analysis of bonded two-layered slab on a Winkler foundation, however, there exist no theoretical formulas and solving methods for the problem when the Poisson's ratios of two slabs are different.

温克勒地基上结合式双层板问题分析的关键在于中性面的求解，但目前对于两层板泊松比不同时的情况仍没有理想的理论公式和求解方法。

The bilevel newsvendor model based on CVaR (Conditional Value-at-Risk) is presented in this paper, in which the supplier is considered as the decision-maker of the upper level while the retailer as the follower.

本文以供应商为领导层，零售商为从属层，基于CVaR(Conditional value-at-Risk)准则，建立了两个双层报童问题模型。

Considering the influence of inner ornament of vehicle, the internal scattered sound field of multilayer elastic/nonelastic cavity is studied theoretically in the paper.

考虑到汽车内饰的影响，本文从理论上研究了双层弹性/非弹性壳体的内部散射声场。

The sound transmission coefficient of normal incidence is presented.

对影响水中双层穿孔板垂直入射声压透声系数的各项因素进行了详细的仿真分析与讨论。

To start with, the indirect boundary element formulations are established for analysis of exterior acoustic problems and the transfer matrix relating the pressure at every field point to the normal component of surface velocity is formed.

基於辐射声压重建结构表面的振动速度存在著解的离散病态问题，从间接边界元法的双层势表达式出发，建立了外部场压和结构表面振动速度之间关系的传递矩阵。

Glider handling might have been affected by the missing nose cone - pressure has built inside the double surface and the glider handling had become stiffer, which could have led the pilot to think he was flying too slow, and to pull the bar further in

三角翼可能会受到没装机头套的影响，气压在双层翼面中增加，它变得很沉，给了飞行员错觉，以为飞得太慢，把手过量拉入。

Excellent quality bridle manufactured of soft leather from Australia with double raised stitching on the browb and , noseband and reins .

这套精美的马缰以柔软上乘的澳洲皮革为材质并配以眉带，鼻带和缰绳处双层浮雕花纹缝制式样。

Double-layer glass door observation window, there is lighting in the cabinet for easy and clear observation.

双层玻璃门观察窗，箱内安装有照明灯，观察方便明了

Double door and double-layer rectangle observation window,adjustable height between layers and clear observation.

双门双层矩形观察窗，工作室内试品搁板高度可调，观察清晰，使用方便。

The observation window on the door is made of double-layer tempered glass, the material heated in the oven can be observed clearly, meanwhile, the thermal insulation is well.

箱门观察窗为双层钢化玻璃结构，能清晰观察箱内加熱的物品，又有良好的隔热效果。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。