环

For several years, large-scale steam turbo generator's rotor collector rings made in our country frequently suffer burning loss problems. Through the massive scene evidence collection and the research, the main reasons of the accident are comprehensively studied and induced. According to the reasons, pertinent measures are found, and have a good effect on preventing the burning loss of generator's collector ring and electric brush.

针对几年来国产大型汽轮发电机频繁发生转子集电环烧损问题进行了大量的现场取证和研究，对事故的主要原因进行了综合分析和归纳，在得出的结论中采取了有针对性的措施后，对预防发电机集电环及电刷烧损事故的发生起到了良好的效果。

In order to meet the requirement of the Collector ring dipole superconducting magnet of FAIR in the process of operation, meanwhile, and to ensure the heat loads coming from the support structures to be lower than the design demands, the 3D models of support structures have been constructed with CATIA, then the calculation of low-temperature heat-load and the structure analysis have been done with ANSYS, the support structure material, 316LN+G10, is decided according to the heat-load calculation and the structure optimization, these results are necessary for manufacturing the formal magnet.

为保证FAIR收集环(Collector ring-CR)超导二极磁体工作过程中的磁场位形符合设计要求，同时保证由磁体支撑带来的热负荷小于设计要求，用CATIA软件建立了不同结构的磁体支撑3D模型，并用ANSYS有限元分析软件对建立的模型进行了低温热负荷分析和结构分析。通过比较分析的结果和对磁体支撑结构进行的进一步优化，确定了316LN+G10材料的支撑结构，为收集环超导二极磁体工程制造提供了参考。

Inhibition ring tests show that when the detergent is diluted to 0.2%,the ring diameter sizes for Staphylococcus aureus and colon Bacillus are 28.8 mm and 11.5 mm respectively.

采用抑菌环法做抑菌实验，该抗菌洗洁精在稀释至质量分数为0.2%时，对金黄色葡萄球菌和大肠杆菌的抑菌环直径分别为28.8 mm和11.5 mm。

For the need of establishing construction machinery customization system, through the analysis of Itten and Ostwald color theory, 12-color circle of Itten was improved for gradient color circle.

针对开发工程机械个性化定制系统中色彩定制的需要，通过分析伊顿、奥斯特瓦德色彩理论，为色彩工程化的需要，将伊顿12色环改进为连续渐变的色环。

Melamine is one of the major components in Pigment Yellow 150, a colorant in inks and plastics.

三聚氰胺是一种三嗪类含氮杂环有机化合物，重要的氮杂环有机化工原料。

You can check the value of any fixed value resistor in the same way, and confirm that you have worked out the colour code correctly. Don't forget that the colour code convertor program is available to help you.

你可以用相同方法测量各种不同的固定电阻的阻值，并与色环标称法对比看看，不要忘记色环标称值转换可以帮助你快速确定阻值。

In Chapter 4, there are two important structures, loops and stacks for an abstract single-strand RNA. Based on the method of combinatorial enumeration, we make a new discussion about the enumeration problem and get its approximation with the limited length of end loop.

第三部分：RNA二级结构是由一些环和茎组成的结构，在此基础上，本节以端环中自由基数为参量，我们又利用组合技巧解决了一类RNA二级结构的计数并给出了它们的近似值。

A general method to show a commutative ring R with 1 to be not universal for GE〓 is presented.

给出了一种证明含1交换环R为非GE〓泛的环的较一般的方法。

In this paper, we introduce the notion of M-valuation systems for a commutative ring, and investigate the M-valuations from the inside of a commutative ring.

在本文中，我们引进了M-赋值系统的概念，从环的内部给出交换环上M-赋值的结构。

Let n ≥ 4 be a fixed integer, R be a unital commutative ring of characteristic not 2, and D_n be a D_n-type classical Lie algebra over R.

假设n是一个大于等于4的整数，R是特征非2的有单位元的交换环，D_n是环R上的D_n型李代数，N是D_n的一个极大幂零子代数。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。