大轴

5Calibration of the laser optical axis of the basic principles and methods isdiscussed, laser target designator axis calibration device is designed, the key technologythat a large caliber, long focal distance from the axis parabolic reflector design is solved,and the cross target line which can be used for a wide variety of observation devices isdesigned, the final calibration accuracy is 0.05mrad.

5论述了激光光轴校正的基本原理和方法，设计了激光目标指示器光轴校正装置，解决了其中的关键技术：大口径、长焦距离轴抛物面反射镜的设计问题，并设计了可用于多种观瞄装置的十字靶标，最终的校正精度达0.05mrad。

Recurvata occurred in the Posongchong Formation of Zhichang Section, Wenshan District. Detailed research shows that Huia gracilis sp. nov. has K- or H-type branching in the rhizome.

茎轴光滑，二叉分枝，直立的长楔形孢子囊侧生，松散螺旋排列，具长柄，由较小的近轴瓣和较大的远轴瓣组成，两瓣凹凸，开裂缝具明显的边缘加厚带。

Axis of maximum moment of inertia = the axis of figure: because the Earth is not a perfect sphere, but is physically an oblate spheroid, the position of the axis of figure is not a precise constant, but is affected by the constant change in the earth's distribution of total mass:(ie, by ocean tides, atmospheric cond- itions, plate tectonic movements, etc.).

轴最大转动惯量=形状轴：因为地球不是完全的球形，而是一个扁球体，形状轴的位置不是精确的常量，而是受地球总质量的分配持续变化作用：（也就是，受海洋潮汐、大气环流、地质板快运动等等）。

Aimed at the minimum maximum principal stress,based on three dimensional finite element analysis,with the help of FEM software,an optimization method is used to design the main parameters of the joint cross of universal coupling.

利用ANSYS软件对轧机主传动系统的万向联轴器十字轴进行三维有限元分析，在此基础上，以十字轴所承受的最大主应力最小作为追求目标，在ANSYS软件中对其主要参数进行了优化，得出了较为理想的结果。

Detect drive way too much space is a fixed power input shaft and output shaft rotation shaking, in the case of the transmission structure of conventional design and manufacture of machine tools, the transmission output shaft angle space at more than ten degrees to the dozens of degrees Transmission gap caused by too large spiral screw groove surface then there is obvious marks, thus affecting the machining accuracy of the screw.

检测驱动方式太多空间是一个固定的动力输入轴与输出轴旋转摇晃在常规情况下传动结构设计和制造的机床，传动输出轴角空间超过度到10度的数十个输电差距过大造成的螺旋槽螺旋面则有明显的标志，从而影响了螺丝加工精度。

A cap and two pinch bolts hold the crank in place, rather like a threadless headset.

与大飞联体的中轴，在安装时有些像在装无纹前叉：在轴的另一端，曲柄像立把一样，用两颗螺丝把中轴夹紧。

Possessing a batch of researchers, developers and technicians in the field of electric control, Zhenhuan could provide technological support in the production of transformer and ballast for customers, and its main products are as follows: belt-winder, loop wire winder, winder for special use in large torsional force,in high frequency power supply, in filter, and in front-monopodium, high-speed biaxial and four-axis winder, encapsulated machine, soldering machine, ancillary equipment, etc.

工厂拥有业界资深的研发与电控技术力量，能同时向客户提供变压器、镇流器制作的技术支持；主营业务为皮带式及边滑、线滑式环型线圈绕线机、镇流器用大扭力绕线机、高频开关电源专用绕线机、滤波器专用绕线机、正面单轴/双轴四轴高速绕线机及包胶带机、焊锡机等周边设备。

The SWC integer yoke cross-shaft universal coupling especially improved patterns (five patterns in front of table 1) are provided with characters of big transmittal twisting moment, compact structure, beautiful appearance, long lifetime, convenient maintenance and wide applicative area comparing with other patterns of universal couplings.

SWC型整体叉头十字轴式万向联轴器特别是改进型（表1中前五种型式）与其它结构型式的万向联轴器相比，具有传递扭矩大、结构紧凑、外形美观、使用寿命长、维修方便、应用范围广等特点。

And for the stress in the directional direction, which is imposed on the lathe-bed, the bending plane is an epiplastron, therefore, the batten wall pore should be designed in the epiplastron.

而当孔的位置是位于弯曲中性轴附近的时候，其对弯曲刚度的影响比较小，而当其远离中性轴即靠近边缘的时候，对弯曲刚度的影响就越大，所以应该将板壁孔布置在弯曲中性轴附近，这样可以减少孔对床身刚度的影响。

And for the stress in the directional direction, which is imposed on the lathe-bed, the bending plane is an epiplastron, therefore, the batten wall pore should be designed in the epiplastron.

而当孔的位置是位於弯曲中性轴附近的时候，其对弯曲刚度的影响比较小，而当其远离中性轴即靠近边缘的时候，对弯曲刚度的影响就越大，所以应该将板壁孔布置在弯曲中性轴附近，这样可以减少孔对床身刚度的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。