查询词典 concentric

According to the basic equations derived under the two assumptions by Harold Lauffer—(1) the energy head of every point of a vertical section remains constant,(2) the flow lines are concentric circular arcs,this paper qives a comprehensive deduction of curvature effect in the characteristics of free overflow of round-crested spillway.118 runs of experiments of three round-crested spillway models of different size have been conducted by the author.

本文根据劳弗尔氏在两项假定[(1)垂直测线上各点所含能量为常数，(2)流线呈同心圆弧]下所导得的基本公式，作了详细的补充引伸，得出圆顶壩自由溢流时各项水力特性中的曲率影响计算公式。作者曾进行了大、中、小三个圆顶壩模型的试验共118组，试验成果基本上和导得的计算公式相合致。文中并根据试验资料制定了一些经验公式，应用时可更简便。

After the nasal cavities of the volunteers were decongested and topically anesthetized,the specially designed concentric needle electrode was inserted in the site of the TVP intranasally under the guidance of nasopharyngo scope.

在进行鼻腔粘膜收缩及表面麻醉后，经由鼻内窥镜介导下，将同心圆电极针置入TVP不同扎入点，嘱受试者进行一系列的空吞咽以及含水吞咽动作，选择9名受试者进行空吞咽与含水吞咽引发TVP收缩时EMG比较，记录所有吞咽时TVP的EMG波形。

Like trees, stalagmites are often composed of concentric layers that represent annual growth periods.

同树木一样，石笋通常也有能显示其年生长周期的年轮。

In order to support a preselected resonant mode, a series of concentric rings (18) is formed in the blocking layer (16, 19), surrounding the resonant cavity (2) so as to provide a Bragg structure which reflects light from the cavity with a phase characteristic that supports the preselected transverse resonant mode.

为支持预定的谐振模式，在阻挡层（16、19）中形成一组围绕谐振腔（2）的同心环（18）以提供一种反射腔中的光的布拉格结构，其相位特性支持预定的横向谐振模。

Tannoy is famous worldwide for its innovative, unique and very accurate sounding Dual Concentric.

天朗是享誉世界的创新，独特，非常准确探测双同心。

Many design change clues that can date an old Tannoy Dual Concentric very accurately.

许多设计更改日期的线索，可老天朗同轴双非常准确。

Monitors with Tannoy Dual Concentric drivers.

双显示器的天朗同轴驱动程序。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。