目的：确定正常个体中上下眼睑周围泪河凹面的昼夜变化。
PURPOSE: To determine diurnal variation of tear menisci around upper and lower eyelids in normal subjects.
用圆柱和放大的叶片做模型，模拟叶片前缘和叶盆凹面的流动。
Cylinder and enlarged blades are used as test models for simulating the leading edge and concave surface of the blade.
对于冲击面为凹面的冲击射流，远场噪声总声压级对喷嘴位置改变非常敏感。
For a jet impinging onto a concave plate, the OASPL of the far-field noise is quite sensitive to position variations of the nozzle.
在获得我想要的形状之后，我把我的模型上了石膏，从而创造一个凹面的模具。
After achieving the desired shape, I cast my model in plaster to create a concave mould.
Wright系统的核是一个标准化的4x12 x 24英寸的带凹面的混凝土或玻璃砖块。
At the core of Wright's system was a standardized 4x12x24-inch concrete or glass block with concave edges.
根据磁力研磨加工原理，基于数控铣床研制了磁力研磨实验装置，对平面和凹面的磁力研磨加工进行了实验研究。
According to the principle of magnetic abrasive finishing, a magnetic abrasive finishing setup was designed base on CNC milling machine.
工作室想要使房子的形状充满山谷为背景的基地，并因此设计了一个巨大混凝土凹面的屋顶，并且各个角向外伸展。
The studio wanted the shape of the house to fill the plot in the base of a valley, and so designed a large concrete roof with scooped sides and corners that stretch outwards.
工作室想要使房子的形状充满山谷为背景的基地，并因此设计了一个巨大混凝土凹面的屋顶，并且各个角向外伸展。
The studio wanted the shape of the house to fill the plot in the base of a valley, and so designed a large concrete roof with scooped sides and corners that stretch outwards.
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