环形

Because the horizontal lathe craft scope is quite widespread, may in the turning the outer annulus cylinder, the circular conical surface, the ring channel, the solid of revolution formation surface, the turning end surface and each kind of commonly used metric system, the British system, the mold notational system, the pitch system thread, but also may carry on drills the center bore, the drill hole, the broaching, reams, work and so on tapping, wrap thread and knurling.

因为卧式车床的工艺范围相当广泛，可以车削内外圆柱面、圆锥面、环形槽、回转体成型面，车削端面和各种常用的公制、英制、模数制、径节制螺纹，还可以进行钻中心孔、钻孔、扩孔、铰孔、攻螺纹、套螺纹和滚花等工作。

The ring spanner is in my hand.

环形扳手在我这里。

Experimental TEA CO2 laser with printed circuit board preionization is used. The laser has gain length of 90 cm. The resonator is composed of a total-reflective concave spherical mirror of curvature radius 20 m and a total-reflective plane mirror of mirror radius 4.5 mm, separated by 5 m distance.

实验中TEA CO2激光器采用印刷电路板预电离结构，增益长度90 cm，腔长5 m，球面全反射镜曲率半径20 m，输出端平面镜半径4.5 mm，得到了内环半径为4.5 mm、外环半径为5.5 mm的基模环形光斑输出。

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。

The spherical gear is a new type of gear formed by attributing ring teeth on its spherical surface.

球齿轮是在其球冠面上分布着环形齿的新型齿轮。

The simulation and experiment on the diffraction property of axicon focus for spherical wave.

圆锥透镜对球面波环形聚焦特性的仿真和实验研究。

According to customers requirement, we can lathe all kinds groove on the rubber surface . groove line such as rhombus squareness herringbone linearly ,cycle spirality and so on . also the specification can make to measure such as angle of pitch、quantities of lines、deepth and width of groove.

英强公司制造的槽纹橡胶辊，可根据用户要求在胶辊表面加工各种的槽纹(如菱形、方形、人字形、直线形、环形、螺旋形等)，规格(螺距角、分头数量、槽深、槽宽等)可根据要求定制。

In addition, the development of new varieties have a disc spring, cochlear Volume spring, the ring spring.

此外，已开发的新品种有碟簧，蜗卷弹簧，环形弹簧。

In addition, the development of new varieties have a disc spring, cochlear Volume spring, spring and the inflatable ring spring.

此外，已开发的新品种有碟簧、蜗卷弹簧、环形弹簧和充气弹簧。

They had reached the crater well before dawn, without incident despite the presence of stepped-up Inorganic patrol teams.

他们刚好在拂晓以前到达了环形山，没有惊动加强过的无机兽巡逻队。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。