圆环

Circle ; natural attribute ; variation ; limit circle ; sustainable development ; square ; harmoniousness ; coexist

圆； 自然属性；变分；极限环；可持续发展；方；和谐；共处

Then the influence of the different Coanda surface shapes including the circle, elliptical and logarithmic spiral TE geometries on the performance of the circulation control airfoil were investigated.

在此基础上研究了具有圆、椭圆和对数螺线形式柯恩达表面的环量控制翼型性能的变化，初步探讨了射流层附壁与高曲率表面特征参数的关联。

The velocity profile should be confirmed when non - Newtonian fluid flowing in duct and annuli is researched.

在研究非牛顿流体圆管和环空管流层流流动问题时，确定其速度分布是关键。

The jet-shaped protuberance was found on collision region of copper tube with guard ...

最后，利用DYNA3D程序就保护环倒角变化对金属圆管对碰区壳体破裂的影响特征进行了初步分析。

In order to use computer in the roundness measuring,the algorithm of verifying method must be written .

在圆度误差测量中，对误差的评定是重要的一环，目前国标中规定有 4种评定方法，其中最小区域圆法为推荐使用的方法。

Sunshine Jinsheng prospecting machinery parts factory was established in 2004, in Juxian County in Rizhao industrial roundwood, mainly the production of machinery parts of prospecting, drilling pipe series of products, all kinds of Taps, the mother cone series, including alloy free clamp, pliers, wrenches, Pad fork, plywood, hammer hanging Series, all kinds of joints, joint public and joint mother, coupling series, Kahuang, kava series, to Reply, Reply to Central series, with the rope diamond drilling coring drill pipe, drilling - Tube assembly, gripping Trojans, and other products, and processed in accordance with customer demand for a variety of accessories.

日照金盛探矿机械配件厂成立于2004年，位于日照莒县工业圆，主要生产各种探矿机械配件，产品有钻杆系列、各种丝锥、公母锥系列、含合金自由钳、钳子、扳手、垫叉、夹板、吊锤系列、各种接头、接头公、接头母、接箍系列、卡簧、卡瓦系列、提引器、提引环系列、金刚石钻进用绳索取心钻杆、钻杆内管总成、木马夹持器、等产品，并可根据客户需求加工制作各种配件。

Pathological studies on the gut-associated lymphold tissues of sacculus rotundus of rabbit infected with RHDV: ultrastructural pathologic observation.

刘环， 佘锐萍*等：实验性感染肠球虫兔的圆小囊上皮间淋巴细胞及杯状细胞定量观察。

The Saracen came on at the speedy gallop of an Arab horseman, managing his steed more by his limbs, and the inflection of his body, than by any use of the reins, which hung loose in his left hand; so that he was enabled to wield the light round buckler of the skin of the rhinoceros, ornamented with silver loops, which he wore on his arm, swinging it as if he meant to oppose its slender circle to the formidable thrust of the western lance.

撒拉逊人用阿拉伯骑士惯常的高速冲来，他靠移动身子操纵坐骑，很少动用松松地挂在腕上的缰绳，空出来的左手拿着一面包着犀牛皮的圆盾，盾上的银环套在他的臂上，现在他晃着这面小盾，象是要靠它来抵挡西方人长矛的猛刺。

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。

Firstly, the developing principles of the cylindrical internal helical gear are proposed through analyzing the movement and geometry requirements, which provides continuous contact between the mating gear surfaces. The tooth surface of the internal helical gear in the new gearing can be imagined as being generated by the normal section of the conjugated surface of the ball-tooth, moving along the radial projection of helix line of the tooth-root circle. Also, the proposed surface can be approximate tangent to the conjugated surface of the ball-tooth along a spacial curve.

首先，通过分析保证行星轮作螺环运动时与内斜齿轮实现连续啮合传动的运动和几何条件，提出了圆柱内斜齿轮齿面的两种形成原理：即由球齿运动包络曲面的法截面沿其齿根圆螺旋线在径向的投影进行拓展所形成的内齿面，以及与球齿运动包络曲面呈近似相切接触的等螺距齿面构成的内齿面。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。