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- The figure bounded by and containing the area between two concentric circles. 圆环域以两个同心圆为界的图形或两圆之间包括的图形
- A hollow cylinder or tube used to conduct a liquid, gas, or finely divided solid. 管子，导管，输送管用来输导液体、气体或固体细末的管状中空圆柱体
- A hollow cylinder or tube used to conduct a liquid,gas,or finely divided solid. 管子，导管，输送管用来输导液体、气体或固体细末的管状中空圆柱体
- This stage produced a tuft of barbs fused to the hollow cylinder, or calamus. 在这一阶段，有一簇羽枝会与中空圆柱融合在一起，形成翮（即羽根）。
- The stressmeter consists of a short solid or thick hollow cylinder of birefringent material. 应力计由双折射材料制成的实心短圆柱体或厚壁空心短圆柱体构成。
- Like the core of earth, the mantle can also be divided into two concentric layers, the lower mantle and the upper mantle. 就像地球的核部一样。地幔也可分为两个同心圆圈层，下地幔和上地幔。
- A hollow cylinder,especially one that conveys a fluid or functions as a passage. 管空心圆柱体，尤指用于运送液体或作为通道的管子。
- We need to calculate the sizes of two concentric circles to solve this mathematic problem. 这道数学题要求计算两个同心圆各自的面积。
- Various cases for a hollow cylinder can be treated in exactly the same manner but with a little involved algebra. 关于空心柱体的各种情况，可以用完全相同的方式加以处理，不过代数计算上稍为麻烦一些而已。
- Day two concentrate on back, triceps, and biceps. 第二天 背部，三头肌和二头肌。
- The wave propagation along axis direction in piezoelectric hollow cylinder is studied. 对压电圆柱壳体内波的轴向传播进行了研究。
- Rainbows sometimes appear as two concentric bows with the inner one called the primary bow and the outer one the secondary bow. 彩虹有时会以两条同心圆弧形态出现。内弧称为主虹,外弧称为副虹或霓。
- A hollow cylinder, especially one that conveys a fluid or functions as a passage. 管空心圆柱体，尤指用于运送液体或作为通道的管子
- The hollow cylinder that is carried by each member of a relay team and passed to the next runner. 中空的圆柱形棒,接力赛跑中每组的每个队员拿着跑并传给下一个队员。
- These are placed inside the smaller of two concentric drums along with the dirty laundry, a squirt of detergent and a little water. 他们被放置在两个同轴的洗衣缸的狭小内部，洗衣缸中还有待洗的衣物，一注射器量的洗涤剂，很少量水。
- The article relates the main procedures of making the thin wall, multihole, carbide hollow cylinder. 叙述了硬质合金薄壁多孔空心圆柱形套筒毛坯制造工艺过程的主要工序。
- The article designs a special dial thickness gauges that measures the distance between ring-steps in two concentric bores. 设计一套特殊测厚规测量两个环形凸台的距离,这两个环形凸台位于两个同心孔内。
- Dynamic hollow cylinder apparatus(HCA) is the most advanced and complicated device in lab-testing on soil dynamics. 动态空心圆柱扭剪仪(HCA)是目前国内外公认的最复杂、最尖端的室内土动力学试验设备。
- Dynamic hollow cylinder apparatus (HCA) is the most advanced and complicated device in lab-testing on soil dynamics. 摘要动态空心圆柱扭剪仪(HCA)是目前国内外公认的最复杂、最尖端的室内土动力学试验设备。
- I wish the new year, as always, two concentric, three homes, four singing, Wufu quick succession 66-shun Italy, comes to the Finance HEDY P Plus Hongyun, 99 lucky, very happy. 祝新的一年一如既往，二人同心，三口之家，四季欢唱，五福临门，六六顺意，七喜来财，八方鸿运，九九吉祥，十分美满。
