从轴

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。

In each subcarrier there are four possible constellation points that lie in each quadrant in the complex plane and are equidistant from the real and imaginary axes.

在 每个副载波有四个可能的星座在于合成物的每个四分圆的点将是距离相等的刨平并且从那真正的和想像的轴。

Oil gravity tank until the oil gauge indicating "60", but the lub.

从水中渗出，显然尾轴油封装置漏了。

At 24 h, Ang1 was expressed mainly in the lens, optic cup, mesencephalon, ventral part of hindbrain, and myotomes in the somites, while zfTie2 was mainly expressed in intersomitic vessels including dorsal aorta and axial veins, and sprouting vessels from the dorsal aorta in the trunk. VEGF was expressed mainly in the lens, optic cup, mesencephalon and myotomes in the somites, while zfFlk1 was mainly expressed in intersomitic vessels including dorsal aorta and axial veins, and sprouting vessels from the dorsal aorta in the trunk.

结果从受精卵胚胎发育第12小时可见血管内皮细胞生长因子和血管发生素1及其相应受体flk1和Tie2的表达；在受精卵胚胎发育的第16小时，血管内皮细胞生长因子和血管发生素1主要在头部和尾部胚芽表达；第24小时在眼球、视窝、中脑、后脑的腹前侧和肌节中表达，Tie2和Flk1主要在肌间背部动脉血管、躯干新生血管芽和轴向静脉中表达。

Wind the wire rope from the two guiding block of the pillar, pass through the fall block, fix on the pillar or on the pulling shaft axle of weight limit appliance

4.4.4将卷扬机上钢丝绳从顶梁的两只导向滑轮上绕过，穿过吊笼上的动滑轮，固定在顶梁上（或顶梁上悬挂的重量限制器的拉杆轴上）。

As a downstream piping system when the valve opens, reflux valve, when closed, the main medium used to prevent backflow to prevent the pump and drive motor reversal, as well as a container medium discharge; currently the most commonly used is the valve flap around the body Swing Pin rotation flap valve and the valve body along the vertical axis to move lift check valve, but the above two kinds of structures exist in the valve closed, medium speed back quickly from the largest drop to zero, inlet side of the pipe resulted in the rapid pressure rise, resulting Proportional Pressure Reducing Valves in damaging effects on the piping system of water hammer phenomenon, it is generally a diameter of valve production of 50 ~ 500 mm.

止回阀作为管道系统顺流时开启，逆流时关闭的阀门，主要用于防止介质倒流，防止泵及驱动电机反转以及容器内介质泄放；目前使用最普遍的是阀瓣围绕阀体销轴旋转的旋启式止回阀和阀瓣沿着阀体垂直中心线移动的升降式止回阀，但以上2种结构的阀门均存在关闭时介质倒流速度从最大迅速降为零，致使管道进水管一侧内压迅速升高，从而产生对管路系统有破坏作用的水锤现象，所以一般止回阀生产口径为50～500 mm。

First based on the basic principles of hydraulic pumps, the axial piston pump is introduced combining with their own characteristics.

首先从液压泵的基本原理着手，结合轴向柱塞泵自身的特点进行介绍。

Nevertheless, in this gure the horizontal axis of the resultant proles are converted to surface positions varying from zero to expected feeds of 0.4, 0.6, 0.8 and 1.0 mm/rev for better comprehension.

然而，在这个数字横轴的由此造成的个人资料将被转换为表面的立场不同从零到预期饲料0.4 ， 0.6 ， 0.8和1.0毫米/恢复为更好地理解。

Theory and calculation formulae of the turbine efficiency measuring method based on pump shaft power measuring are elucidated.

笔者首先采用热力学方法，从给水泵端着手，用测量给水泵轴功率的方法来测量给水泵汽轮机的效率，对该测量方法的原理和计算公式进行了阐述。

Keeping this in mind, a study was undertaken to determine the effect of CA on early growth of mung bean (Phaseolus aureus=Vigna radiata), morphogenetic response in hypocotyl cuttings of mung bean, and changes in the activities of some associated enzymes – proteases, polyphenol oxidases, and peroxidases – and endogenous total phenolics at root initiation (third day; 48 h; appearance of root primordia; RI), root expression (fifth day; 120 h; appearance of roots; RE), and post-expression (seventh day; 168 h; PE) stages of rhizogenesis.

保持这一点，一项研究，以确定影响钙对早期生长绿豆（ phaseolus金黄色葡萄球菌=豇豆拉迪雅塔），形态发生反应，下胚轴插条绿豆，和变化，在活动的一些相关的酶-蛋白酶，多酚氧化酶，过氧化物酶-和内源性总酚的从根本上启动（第三天； 4 8小时；外观根原基；里），根的表达（第五天； 1 20改为H级；外观根；转口），和后表达（第七天； 168改为H级； PE ）的阶段rhizogenesis 。

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