有环的

It is considered the hydrogenated base Stock has clear advantage superior to the naphthene base oil by comparison the physiochemical properties and electrical properties of hydrogenated base Stock and naphthene base oil,and can be formulated the transformer oil.

从理化性能和电性能方面对加氢基础油和环烷基油进行了比较，认为加氢基础油的性能比环烷基油有明显的优势，可以用来调配变压器油。

Suppose a group of trees were felled in the same year, what could be said about the range of the number of sapwood rings found on the trees?

现已知生长在肯特的橡树平均边材环数大约为25而且有90%的机会边材环数在15-35之间。怎样用模型来表示这种变化？

The experimental results show that the measurement error might be no more than 1 pixel for perturbance free images.

实验结果表明，对于无扰动的圆环图像其误差小于1个像素；对于有扰动的圆环像误差不超过5个像素。

To enhance security in Ad-Hoc networks,it is important to evaluate the trustworthiness of other nodes without centralized authorities.In this work,authors focus on the evaluation of trust evidence in Ad Hoc networks.First,the authors introduce the metrics of the trust,the evaluation process is modeled as a path problem on a directed graph,where nodes represent entities,and edges represent trust relations.Using the theory of semirings,a trust evaluation model based on semiring（TD-SEMIRING） is developed,then two nodes can establish an indirect trust relation without previous direct interaction and introduce the application of this model in route election.At last,the feasibility of this model is analyzed.

讨论了对可信事件的评估：首先介绍了可信的相关概念和相关的特性；接着评估过程被建模成一个在有向图寻找最短路径的问题，在该有向图中结点表示实体或者用户，边表示可信关系，通过使用半环理论，建立了一个基于半环的可信性评估模型TD-SEMIRING，在两个以前没有进行相互操作的实体之间建立间接的可信关系，介绍了这个模型在路由选择当中的应用；最后，通过仿真实验，验证、分析了该模型的有效性。

Results AE from CM had vasodilating effect on the contracti on of mesentery blood capillary in guinea pigs and the contraction of rat thoracic aortic ring induced by l0μmol/L phenylephrine, even under the condition of pre-treating with glibenclamide (1μmol/L) or propranolol (3μmol/L). When the endothelium of the rat thoracic aortic ring was removed, AE from CM had not vasodilating effect hut constrictive effect. AE from CM could also increase the contents of NO, NOS and cNOS in the aortic tissue and had no obvious effect on the NO content in plasma and iNOS in aortic tissue of rats.

结果 桑白皮丙酮提取物有抑制去甲肾上腺素收缩豚鼠肠系膜微血管的作用，抑制苯肾上腺素(10μmol/L)收缩离体大鼠胸主动脉环的作用，预加优降糖或普蔡洛尔(3μmol／L)后仍然有松弛作用；大鼠胸主动脉环去内皮后药物无松弛作用，反而起收缩作用；显著升高血管的NO和NOS、cNOS含量，对大鼠血浆的NO和血管iNOS的含量影响不大。

A wire tying tool having a set of movable talons (400, 401) for channeling a loop of hard wire fed from a spool (600) around an object to be tied with a wire knot at high speed; a wire drive (364) with a pullback feature to retract the loop under tension to tighten the loop around the object; a clutch-controlled retractable reel to hold the tension on the wire on the reel; a spinner/cutter that extrudes a knot by turning, kinking and cutting the wire, and then rotating to twist the wire into a knot while drawing the spinner away from the work surface.

一金属丝捆扎工具有一组带有引导从一卷线筒（600）高速传送来的围绕将被一金属丝结捆扎的物体的、硬金属丝环的通道的可运动的爪钳（400，401）；一具有回拉功能的以便在拉力状态下回拉此环以拉紧围绕物体的环的金属丝传动（364）；一离合器―控制的可回拉的、保持金属丝张力的卷线轴；当旋转器被拉离工作表面时通过转动、扭结和切割金属丝以及然后旋转、以便扭转金属丝形成一结而挤出一结的一旋转器／切割器。

With advanced ring spinners 50,000 spindles, imported jet spinners 800 heads, and combers 20 sets, it produces annually 7,800 t of cotton yarn including ring-spun yarn combed yarn-30S-40S and carded yarn- 32S-60S, jet-spun yarn 6S-12S.

现拥有先进的环锭纺设备5万锭，进口气流纺800头，精梳机20台，年生产棉纱7800吨，生产的品种有环锭纺普梳30S-40S、精梳32S-60S、气流纺纱6S-12S。

Joint sets, to be simultaneously lock engagement ring and the ring gear on the gear are Chamfer, lock ring simultaneously with the question of the cone gear engagement ring gear, cone contact with friction.

接合套、同步锁环和待接合齿轮的齿圈上均有倒角，同步锁环的内锥面与待接合齿轮齿圈外锥面接触产生摩擦。

Wheares under buffer pH5.2, there is no strong static electricity and instead being a longer wavelength movement; SDS\'s participation just restricts the relative movement of heme\'s ethylene; a new fluorescent peak forms and the reduction of enzymatic activity is due to the packing of micella\'s formation.

强变性的阴离子表活剂SDS与带净正电荷和弱负电荷的SBP(处于pH2.6和4.2缓冲液中)有强烈的静电力作用，酶活力丧失，二级结构变化，荧光强度增加，特征Soret发生蓝移，卟啉环的π-π*共轭的分裂能增大；而当SBP带净负电荷(pH5.2)时，没有静电吸引力，Soret带发生红移；SDS的引入只是限制了血红素上乙烯取代基的运动，使其与卟啉环共轭：极性环境的变化导致产生新的荧光峰；酶活力因胶团包裹作用而有下降。

A thrust washer is also provided on the shaft adjacent the thrust collar and prevents lubricant leakage along the shaft between the interface of the shaft and the thrust collar.

在电动机轴上还设置有一与所述止推轴环相邻的止推垫圈(76)，该止推垫圈防止润滑剂在电动机轴与止推轴环的交界面之间沿电动机轴发生泄漏。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐