查询词典 gauze ring

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。

The structure shown in the figure : The governing body received direct or roller drying cylinder, as the main components of the rotation; After finishing the outside of the sphere, Bottom Cover and soak spherical carbon graphite seal ring joint seal reliable seal friction deputy, Sealing ring in the spherical shell of its annular space sliding, in addition to oil-free bearings and with the close cooperation of Shell, Rotating connector so that the free support, and therefore do not require a high level of accuracy installed; Spherical seal ring wear, Spring means of pressure at any time in advance to receive compensation, compensation for the shell slowly moved backward, accessible through the tube outside the inscription on the line to observe the seals wear; When steam, Oil flows through the media or other spherical sealing ring and oil-free bearings, the formation of thin liquid film, sealing and lubrication, thereby reducing friction and wear, extending the service life.

其结构如图所示：外管体直接接到辊子或烘筒上，为主要的旋转部件；经过精加工的外管本球面、底盖和浸泡碳石墨球面密封环共同组成密封可靠的动密封磨擦副，球面密封环在其壳体内的环形空间中滑动，加之无油轴承与壳体的密切配合，使旋转接头自由支撑，故对装机精度要求不高；球面密封环磨损后，借助于弹簧的预压力随时得到补偿，补偿时壳体缓缓向后移动，并可通过外管体上的刻线观察到密封件的磨损程度；当蒸汽、油或其它介质流经球面密封环和无油轴承时，形成一层很薄的液膜，提供密封和润滑，从而减轻了摩擦和磨损，延长了使用寿命。

Products include a variety of castings and forging, and so on more than 1,000 pieces of products, of which shackle, the first card, blue flowers, wheels, rings, rotating ring, rings, screws, nuts rings, spring hook, hook-eye, rotating hook, Ring, D-ring, ring fast connection, U-Wire, bollard, hold the door, the living section bolts, butterfly nut products such as stainless steel rigging has been occupied with domestic and international cable industry's fixed market.

产品包括各种铸造件和锻造件等上千余种产品，其中卸扣、卡头、花兰、滑轮、套环、旋转环、吊环螺丝、吊环螺母、弹簧钩、眼型钩、旋转钩、圆环、D型环、快速连接环、U型丝、系船柱、门扣、活节螺栓、蝶型螺母等不锈钢索具产品已占领国内外索具行业的固定市场。

This dissertation is mainly focused on the reactivity of methylenecyclopropanes and comprises six parts. 1 The reactions of methylenecyclopropanes with phenylsulfenyl chloride, phenylselenyl chloride and diphenyl diselenide; 2 The coupling reactions of the ring-opening products derivated from methylenecyclopropanes; 3 The palladium-catalyzed ring-enlargement of mono-aryl group substituted methylenecyclopropanes to cyclobutenes. 4 The gold-catalyzed domino ring-opening and ring-closing hydroamination of methylenecyclopropanes with sulfonamides; 5 The Lewis acid-catalyzed reactions of mono-aryl group substituted methylenecyclopropanes with diethyl ketomalonate in the presence of water; 6 The iodobenzene diacetate mediated novel 1,3-dipolar cycloaddition of methylenecyclopropanes, vinylidenecyclopropanes, and methylenecyclobutane with phthalhydrazine.

本论文主要研究了亚甲基环丙烷类化合物的一些化学反应性能，共由以下六部分组成：1、亚甲基环丙烷类化合物与苯硫氯、苯硒氯及二苯基二硒的反应；2、亚甲基环丙烷类化合物开环产物的偶联反应；3、单芳基取代的亚甲基环丙烷类化合物在钯催化剂作用下的扩环反应；4、金化合物催化磺酰胺对亚甲基环丙烷类化合物的串联开环关环氨氢化反应；5、路易斯酸催化亚甲基环丙烷类化合物与丙酮二羧酸二乙酯在有水存在下的反应；6、醋酸碘苯促进的亚甲基环丙烷类化合物、亚乙烯基环丙烷类化合物及亚甲基环丁烷类化合物与邻苯二甲酰肼的新型1，3-偶极环加成反应。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。