环形

They are portions of a sphere, a torus or a cone

他们是一球形、环形或锥形的一部分。

A piece of magnetic material, usually torus shaped, used for storage .

一种供存储器使用的磁性材料，其形状通常是环形曲面体。

And this causes a frequency change Δf. The resonant point tracing algorithm describes how to detect Δf. So it can introduce a feedback frequencydifference -Δf through a closed loop to realize the resonant state o In the digitaldetection scenario, using staircase wave to replace saw tooth wave, it can overcome a lot of shortcomings in the analog system. The character of the staircase wave affects the detection precision directly. This thesis analyzes a high precision scenario producing a staircase waveform in detail. It can reduce the number of the bits in D/A converter greatly. This thesis proposes another method to improve the detection precision in case that the A/D converter has comparatively little number of bits, while this method will not increase the cost of the system greatly.

在谐振式光纤陀螺中，环形谐振腔的旋转使得谐振腔的谐振频率发生了变化，从而产生了一个与旋转速度成正比的频率变化值△f，谐振点跟踪算法描述了如何检测出△f，从而可以通过闭环在系统中引入反馈频差-△f，实现光路的谐振状态；在数字闭环检测方案中，用阶梯波作为反馈信号来代替锯齿波，可以克服原来模拟系统中锯齿波的很多缺点，阶梯波的性能直接影响着系统的测量精度，本论文详细分析了一种高精度阶梯波生成方案，使得所需D／A的位数大大降低；本文还分析了A／D转换器对系统测量精度的影响，提出了一种A／D转换器位数较少的情况下提高系统测量精度的措施，同时又不会增加太多的系统成本。

Based on the transcendental equation of fiber ring laser, the output power expression of dual-wavelength fiber ring laser with optical feedback is theoretically deduced in simulation.

根据光纤环形激光器的超越方程，理论上得出该复用系统的输出变化。

Non-Newtonian fluid ; annular flow ; transcient flow ; turbulence.

非牛顿流体；环形空间流动；流态转换；紊流

This is evidenced by narrow tree ring patterns of past passages of planet X.

证据是行星x过去过境地球时所留下的狭窄树状环形物。

Star topology , ring, tree and bus topology what their characteristics?

星形拓扑，环形，树形和总线拓扑各自的特点是什么？

Having atoms linked by bonds represented in circular or triangular form.

原子被呈环形或者呈三角形的链连接在一起。

The second method dealt with the acylation of(2S)-1-amino-3-chloro-propanol Salts in the presence of triethylamine.

通过正交实验对该方法噁唑烷酮环形成反应的条件进行了优化。

Point Reyes National Seashore, California — In a northern enclave of this seashore lies the Tule Elk Preserve, where tule elk range from the cliffs of the Pacific to the shores of Tomales Bay in a broad and nearly treeless expanse.

瑞依丝点国家海岸，加里福利亚州-条尔。爱尔克保护地位于这片海岸的一快环形突出部，它延伸过宽广，树木稀疏的平地，从太平洋的峭壁直到托马利斯海湾。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。