次轴

But the geological and geochemical analyses showed that there existed a set of high quality marine source rock in the platform slope facies of Middle Ordovician Pingliang Formation. The oil and gas generated from the source rock of Pingliang Formation was accumulated firstly in the central Palaeo-uplift and its surrounding regions. The thermogenic asphalt in palaeo-uplift carbonate reservoir indicated that oil accumulation completed transition from oil to gas in the Lower Crataceous. Along with the palaeo-uplift axis convection and the formation of westward monocline in the Late Crataceous, gas from the palaeo-reservoir was finally accumulated in the weathering crust of Majiagou carbonate reservoir.

地质和地球化学分析证实，盆地西、南缘台缘深水斜坡相的中奥陶统平凉组存在优质海相烃源岩，其形成的油气最早富集在中央古隆起及其周围；伴随着中央古隆起带轴部的向东迁移和早白垩世末盆地西倾大单斜的定型，平凉组烃源岩在早白垩世生烃高峰期生成的天然气和早期古油藏裂解气，由中央古隆起带向北东方向发生二次运聚，最终在盆地中部奥陶系马家沟组风化壳中聚集成藏，即形成靖边大气田。

All lenses were classified using the lens opacities classification system Ⅲ based on four categories: nuclear color, nuclear opalescence, cortical cataract and posterior subcapsular cataract. ALs were measured 20 times with an IOL Master, 5 times with an IOL Master version 4.0, and 5 and 15 times with an IOL Master version 5.0 and the results were recorded.

IOL Master 5.0版相对于传统IOL Master采用了组合信号分析技术，将多个低信噪比（signal-to-noise ratio，SNR）的单次眼轴测量结果进行叠加组合，使噪音相互抵消，而反映黄斑中央凹位置的信号被放大，从而提高了SNR。

This project is to analyze the distribution of the light in the high-power laser system, it bases on principles of ray optical, use the paraxial ray trace and real ray trace , proposes a new data structure and way to simulate the light in the optical system in the computer.

本课题就是以含衍射元件的大功率激光装置中由于多次残余反射形成的鬼像为研究对象，从光线光学的基本原理出发，应用近轴光线与空间光线追迹相结合的技术路线，提出一种新型的分析方法和数据结构，开发出用于含衍射元件的高功率激光系统杂散光分析的软件。

It is pointed out that the error of indication E0 for the calibrated test length which are measured when the offset length between the ram axis and the stylus tip is zero shall neither exceed the maximum permissible error MPEE0 nor exceed 1/3 of the probe error,that the repeatability of E0 shall neither exceed the maximum permissible error MPE Rnor exceed the repeatability error of the probe,and that if the measuring data is rejected in acceptance and reverification,measurement must be carried at least 5 times at the same position for reducing the possibility of misjudgement.

提出探测轴探针针头零偏置长度的校准测试长度的示值误差E0应不超过最大允许校准测试长度的示值误差MPEE0，且不应超过测头误差的1/3；E0的重复性误差R不应超过最大允许重复性误差MPER，且不应超过测头的重复性误差。建议验收校准测量数据超差剔除后，必须在相应位置重复测量5次以上，以减小误判的可能性。

The migration distance is closely related to the spontaneous polarization , the size of particle and the direction of polar axis.

结果表明，在SEM下用二次电子电子束轰击电气石微粒，电气石微粒产生自迁移现象，迁移距离与自发极化强度、微粒粒径、极性轴方向等因素密切相关。

Finally, the best values of the diameter of prefabricate hole and extrusion speed is determined through optimize simulation results,In the end, forming experiments study of cold extrusion is processed, experiments results shows that internal thread of C195 knuckle axis can be formed by cold extrusion method, and the extrusion torque is varied when diameter of prefabricate hole and extrusion speed is a series of different value.

最后对挂钩轴内螺纹的加工进行了一系列的实验研究，经过多次实验的失败反复，最终挤压加工出了符合要求的内螺纹；实验结果表明该零件内螺纹时可以采用冷挤压成形方法加工的，并且验证了成形过程中挤压扭矩是随着工件底孔直径和挤压速度的变化而变化的。

To overcome the inconvenience of traditional centrifugal pump impeller design, the quartic Bezier curve is used to design the meridional plane and blade profile.

针对传统离心泵叶轮设计步骤繁琐的不足，提出了采用4次Bezier曲线来设计叶轮的轴面流线及叶片型线的方法。

Rachis of inflorescences covered with scalelike trichomes; leaf blade secondary veins 6-10 on each side of midvein

为鳞片状的毛状体所覆盖的花序轴；叶片次脉6-10在中脉两边各 86 Lithocarpus mairei 光叶柯

It was in doubt for long time whether the static-excitation could be used to improve Subsynchronous Resonance condition in a certain power system with serial compensation.

汽轮发电机采用静止励磁方式使轴系缩短并减少了一个质块，是否可以去掉有危害性的扭振频率，而扩大串补系统中次同步谐振安全运行区范围的问题为工程技术人员所关心。

Arithmetics and implements of function modules are indicated as follows:In the modeling module, the twist ruled surface formed blade is constructed using B-spline interpolation technique.

造型模块中，采用三次B样条插值的技术，构造出叶片盖盘与轴盘曲线，建立了扭曲直纹面形式的叶片型面。

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。