圆环

The CNC Worktable can travel along straight line, arc and circle, controlled by the program.

数控工作台可以走直线、弧线、圆环等，能够满足客户的多种图形切割要求。

Caption:: The Jovian magnetosphere, including the Io flux tube, plasma torus, Jovian aurorae, the sodium cloud, and sulfur torus is shown in this illustration.

在木星附近，它的卫星活在这个庞大的磁层内，如木卫一艾奥就形成了等离子圆环，而且也跟木星通电。

The tectonic rocks along the fault zone are composed of cataclastic rocks and mylonites formed in higher, middle and lower temperature. Respectively, both of structural features and rocks have the features of multiple phase's of deformation. The deformation features of main minerals in the high temperature mylonites show that: the quartz has the form of long single crystal and the fabric feature of point maximum near X axis; the feldspar has the form of recrystallization assemblage, They present a high amphibolite-granulite facies with temperature ＞600℃ and depth ＞20km. The deformation features of mylonites formed in middle temperature show that: the quartz has the form of polycrystal banding and the fabric feature of point maximum near Y axis and small circle girdle with Y rotational axis; the feldspar has the form of a coremantle structure, They reflect a high greenschist-lower amphibolite facies with temperature from 400℃ to 600℃ and depth from 15km to 20km.

其中，高温糜棱岩主要矿物变形特征组合为：石英为长矩状或长条状单晶、组构为近X轴的点极密，长石为几乎完全重结晶的集合体，形成温度＞600℃，相当于高角闪岩—麻粒岩相，形成深度＞20km；中温糜棱岩主要矿物变形特征组合为：石英为多晶条带、组构为近Y轴点极密和以Y轴为旋转轴的小圆环带，长石发育核幔结构，形成温度为400～600℃，相当于高绿片岩—低角闪岩相，形成深度为15～20km；低温糜棱岩主要矿物变形特征组合为：石英发育核幔结构、组构特征为近Z轴点极密，长石以碎裂为主，形成温度＜400℃，相当于中低绿片岩相，形成深度为8～12km；碎裂岩则主要代表了地表浅层的变形。

For the facula after threshold segmentation, the apparatus can recognize it automatically. If it is circular, its center can be worked out by centroidal equation; if it is cirque, after edge detecting, its center can be figured out with Hough transform.

对阈值分割后的光斑图像进行自动识别，若为圆形光斑，利用质心公式求其中心；若为圆环光斑，边缘检测后，利用霍夫变换求其中心。

As an application example, we present the analytical solution to the eddy current problem that a single-turn coil driven by solitary pulse current is arranged coaxially with a spherical conductor.

作为应用，给出了通有单脉冲电流的单匝圆环线圈与球形导体共轴的涡流问题的解析解。

Numerical value show: circular-ring energy dissipater can control seismic response and uplift.

数值计算表明：圆环耗能器能够有效的控制地震响应及提离。

The paper aimed at seismic response and uplift of vertical storage tank, the reaction of base and soil are considered, damping and costing-energy researches are processed which circular-ring energy dissipater is adopted. The simple mechanical model of control system is established, and movement equations are given.

针对立式钢制储罐地震响应及提离效应问题，考虑基础与土壤的相互作用，采用圆环耗能器进行减小地震响应、降低提离的控制研究，建立了控制体系的力学分析模型，并给出了运动分析方程。

El Centro is input, simulation calculations are made on floating-peak tank with circular-ring energy dissipater. The research indicates this control system is effect to apply to decrease earthquake response. History time curves of displacement, absolute acceleration, shearing force and uplift angle are contrasted with and without control. The effect of sets of cirque costing-energy is discussed.

对实际应用的浮顶罐进行了数值仿真计算，所采用的控制体系具有较好的减震效果；对比了储液容器液固耦合质量无控与有控时的位移、绝对加速度和基底剪力和提离转角的时程曲线；探讨了圆环套数对减震效果的影响。

The sodium ions located in the 12-membered ring main channel (with Q〓〓0.2 MHz) of zeolite omega are fully hydrated and so mobile to average out the 〓H-〓Na dipolar interaction, while those in the gmelinite cage (Q〓=2.3 MHz) are less hydrated and closely bonded to the lattice oxygen.

3〓Na MAS及〓Na二维四极章动实验的研究表明，在NaΩ分子筛中存在两类不同水合状态的钠离子：一类处于12-圆环主孔道中(四极作用常数Qcc＝0.2MHz)，另一类处于菱钾沸石笼里(Qcc＝2.3MHz)。

The two operating handles each had a trigger, and the graticule was a black circle.

两个操作手柄各有一个扳机，瞄准分划是个黑色的圆环。

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。