查询词典 ring binder

The semi-simple ring and semi-prime ring. Using properties of zero-divisors, regular elements and diaphysis elements , we obtain some results on the commutativity of Kthe semi-simple ring and semi-prime ring as follows:Let R be aKO|..

the半单纯环、半质环以及任意环的研究，利用零因子、正则元及骨干元的性质以及稠密性定理等相关知识，得到了关于Ko|。。

Soc _RR is a injective left R-module.(4) Soc _RR is a left self-injective ring.|Theorem 4.2.9 Let R be a commutative notherian ring, then the following are equivalent:(1) R is a FS-ring.(2) R is a PS-ring.(3) Every minimal ideal of R is injective.(4) Every minimal ideal of R is p-injective.

定理4.2.9若R是交换的Noethe(来源：Aae0eBe0C论文网www.abclunwen.com)r环，则以下条件等价：R是FS-环；R是PS-环；R的每个极小理想都是内射的；R的每个极小理想都是p-内射的；R是IS-环；R的每个极小理想都是投射的；R的每个极小理想都是平坦的。

Using properties of zero-divisors, regular elements and subdirectly irreducible ring , we obtain some results on the commutativity of semi-prime ring and Jacobson semi-simple ring as follows 1 Let R be a semi-prime ring ,a∈R and 2a is not zero-divisor,If R satisfies one of the conditions in this paper , then R is commutative.

在某些特殊环的交换性方面取得了进一步的结果，并得到了一些新的结论，主要有一设R 为半质环，a∈R ，且2a 为非零因子，如果R 满足论文中八个条件之一，则可以证明环R 为交换环。

As one of the first manufacturers of bearing steel ring in China, the company is mainly engaged in such products as bearing steel ring for cotton spinning, nut, retaining ring, cotter pin, closing ring and flat pad etc.

经试验证明，"衰退钢领"内跑道的几何形态无显著变化，表面具备足够硬度，精抛光后（钢领可达到▽10-▽11级），上车使用效果非常好，可连续抛光使用能达到钢领使用寿命3-5年以上。

The pigment in colored cotton fibers was extracted by methanol at room temperature. The results of color reactions HCl-Mg reaction, NaBH4 reaction, NaOH reaction, FeCl3 reaction and Pb(Ac2 reaction of the pigment extractive showed that the pigment extracted by methanol was flavone or flavonol with two adjacent hydroxide groups (Table 2, Fig. 1). The results of UV spectral analysis further proved that the pigment extracted by methanol from brown fiber belonged to flavone with two adjacent hydroxide groups in B ring, and that from the green fiber contained not only flavone but also flavonols with two adjacent hydroxide groups both in A ring and B ring and indican replaced a hydroxide group at 3-site of A ring Fig.

通过盐酸－镁粉反应、四氢硼钠还原反应、碱反应、醋酸铅反应、氯化铁反应和紫外光谱吸收的分析表明，甲醇室温提取的棕色棉纤维色素可能是黄酮类化合物，B环上带有邻二酚羟基；甲醇室温提取的绿色棉纤维色素除黄酮类化合物外，还含有3-位羟基被糖甙化的黄酮醇类化合物，A、B环上都带有邻二酚羟基。

Type PG-NC NON-Crystallized ring is a new product developed by our corporation Adopting a mordent advanced technology melting the race surface of the ring and then cooling rapidly, makes the race surface of the ring into non-rcystallized metal structure, The property of PG-NC-NON-Crystallized ring is better than that of the ordinary rings.

PC-NC型非晶态钢领是我们公司研制的新一代产品。钢领采用高新技术，用激光融熔急冷改性处理工艺，使钢领工作表面具有非晶态金属结构。

Through comparing the ring and polynomial ring to power series, the defition and theorem of the ring and polynomial ring can be extended into power series.

通过对比环、多项式环与幂级数环，将环、多项式环中的性质推广到幂级数环中。

Here consists of two parts: quadratic residue code over integer ring modulo 16 residue class ring—Z〓 and integer ring modulo 2〓 residue class ring—Z〓.

讨论的内容分为两大部分：整数环模16剩余类环－－Z〓与整数环模2〓剩余类环－－Z〓上的二次剩余码。

Aiming at solving the difficulties of prototype manufacturing of conical ring for the steam generator shell of 600MW Nuclear Reactor,this paper developed a new techniques for the prototype manu-facturing of the great conical ring utilizing ring rolling technology based on RAW200/160-5 ring rolling.

1引言600MW蒸汽发生器壳体是核电站的关键设备，由封头、锥形环件和筒体组焊而成。以往制造这种锥形环件所采用的办法是，先锻制环形筒件再采用机械加工方法成形或者采用自由锻造方法直接在水压机上锻制出大型锥形环件，但这些工艺既费工时又大量浪费材料，而且产品精度不高[1]。

Factory main production: ring, wave washer, saddle-type flexible gasket, C-type snap ring, dish washer, single-ear binaural, round nut with washer stop, both within and outside the teeth, the bearings folder, plum gaskets, flexible cylindrical pin , card ring, DIN standard ring and all kinds of custom pieces of red stretch.

本厂主产：挡圈、波型垫圈、鞍型弹性垫圈、C型卡环、碟形垫圈、单耳双耳、圆螺母用止动垫圈、内外齿、轴承夹、梅花垫圈、弹性圆柱销、卡圈、DIN标准挡圈及各类冲拉伸件定制。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。