大轴

Development of optical manufacturing, especially aspherical manufacturing, boosted the developing of space optics. Aspheric testing for large departures from reference wavefronts becomes the bottleneck of optical manufacturing. Off-axis TMA system presented in space cameras for large field, high resolution, long focal length challenges the manufacturing and testing for aspheric components .

光学制造技术的发展，尤其是非球面加工技术的兴起，促进了空间光学的发展，大视场、高分辨率、长焦距的航天相机离轴三反系统设计的引进对非球面的加工和检测都是很大的挑战，非球面的检测技术越来越成为光学加工的瓶颈，本文从检测角度出发，提出了基于电子虚拟样板的非球面检测技术概念，建立电子虚拟样板的数学模型。

The axis oculi maximum and minimum value of congenital patients were 27.15mm and 19.2mm, respectively.

先天性白内障患者的眼轴最大值为27.15mm，最小值为19.2mm，双眼相差最大值为3mm。

My company has the high-precision large and medium-sized CNC milling spiral bevel gear tooth 4-axis CNC machine tools used not only servo-driven, SIEMENS 802D control system to roll all of milling spiral bevel gear, zero Bevel Gear and quasi-double Surface gear, and to the world's most advanced coordinates Coaxial design, successfully applied in the processing of new products in diameter.

我公司拥有的高精度大、中型数控弧齿锥齿轮铣齿机床不仅采用数控四轴伺服驱动、SIEMENS 802D控制系统，以滚切法铣削弧齿锥齿轮、零度齿锥齿轮及准双曲面齿轮，且把当今世界最先进的坐标轴式设计，成功应用于大加工直径的新产品之中。

Two pairs of chutes and holes on the cleaning base and the brushes form the double chute swing mechanisms by the connection of an axis and cause the brush to cling to the wall surface to clean by the friction feedback, thus achieving effective cleaning when walking error occurs and the pipe section changes, furthermore, the larger the friction on the wall surface is, the larger the forward pressure on the wall surface is, therefore, the dirtier the wall surface is, the higher the cleaning efficiency is.

清扫底座与刷子夹上的两对滑槽和孔通过轴的连接形成双滑槽摆动机构，并通过摩擦力反馈使得刷子能够紧贴壁面进行清洗，从而在出现行走误差和管道截面变化时都能够有效清洗，并且壁面摩擦力越大刷子作用在壁面上的正压力越大，因此壁面越脏时清扫效率越高。

Angle type valve to cut off travel greater pressure is due to media in the spool or the valve plate force generated by the rotational axis of the torque produced is very small, so it can withstand a greater pressure differential.

角行程类阀的切断压差较大，是因为介质在阀芯或阀板上产生的合力对转动轴产生的力矩非常小，因此，它能承受较大的压差。

Angle type valve to cut off travel greater pressure because of media in the spool or the valve plate force generated by the rotational axis of the torque produced is very small, Check Valves so it can withstand a greater pressure differential.

角行程类阀的切断压差较大，是因为介质在阀芯或阀板上产生的合力对转动轴产生的力矩非常小，因此，它能承受较大的压差。

This paper gives a thoeretical analysis on the standard currently adopted in China for the widening of railway track gauge on curves, and points out that this atandard does not tally with the railway oparational actuality, the calculation data used are not in conformity to the present rolling stock conditions in this country and that the marginal radius and the amount prorided for the widening of curved track gauge are on the large side.

本文对我国现行曲线距轨加宽标准进行了理论分析，指出它脫离运营实际，而采用计算数据又不符合我国现有车辆情况，加宽起始半径和加宽值都偏大。提出在理论上比较切合实际的计算方法是车辆按力学自由內接条件计算；机车和少数固定轴距大的车辆，按最小运营半径条件检算，制订我国的曲线轨距加宽新标准。

A large handle size gives more area to apply friction and a wider radius to apply the frictional force in order to resist racquet twisting about its longitudinal axis (Torsion, or Longitudinal Torque) on off-center hits.

大的手柄尺寸可以提供更大的面积来增加磨擦力，更宽的半径能产生磨擦力来阻止没有击中中心时球拍绕长轴的翻转。

The piston pump has many kinds of structures; the variable displacement axial piston pump with a swash plate is a better kind among them and could best match the requirements of large flow, high pressure, and small volume. It also has a advantage of easily realizing the control of flow and pressure.

柱塞泵有许多结构形式，斜盘式轴向柱塞变量泵是诸多柱塞泵结构中结构比较先进，最能适应现代作业大流量、高压力、体积小要求的柱塞泵结构形式；并且对于实现多种流量、压力控制有着较大的优势。

To compare the effect of"exercise-induced lower serum testosterone" on body functions with that of"Kidney-yang deficiency" in rats, the changes of pituitary and gonadal function and metabolism were studied. The muscle and liver glycogen concentrations, energy metabolism and α-actin gene expression in EILST and KYD rats were also studied.

为研究&运动性低血睾酮&与&肾阳虚&对机体的影响是否相同，本研究以长期大强度、较长时间游泳造成&运动性低血睾酮&，以0.5％腺嘌呤喂饲造成&肾阳虚&，并就两种状态下大鼠性腺轴功能、肾脏结构与功能和代谢、体内糖储备及骨骼肌能量代谢、以及骨骼肌α—actin基因的表达进行了探讨。

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％。