Annuity pension system plays an important role in each country, and it is a way in settling the aging problem.

Enterprise Annuity pension insurance system is the second level is to supplement the basic old-age insurance.

企业年金是养老保险体系的第二层次，是基本养老保险的补充。

The path in China of the annular eclipse of the sun, may 20,1966

1966年5月20日经过中国境内的日环食路线

Effect of annular eclipse on time signal propagation of Loran-C sky wave

日环食对LORAN-C天波时号传输的影响

Effect of the annular eclipse on the solar radiation and surface meteorological elements

太阳辐射和地面气象要素的日环食效应

According to the evidence which have been observed, it is proposed that annulate lamellae in goldfish oocytes are probably differentiated from the rough endoplasmic reticulum.

我们从观察结果推测金鱼卵母细胞的环孔片层可能是由粗面内质网衍生而成。

The roles of two kinds of membrane vesicles in the formation of annulate lamellae and nuclear envelopes in a cell-free system from Xenopus egg extracts

非细胞体系核重建过程中两类膜泡在环形片层及核被膜形成中的作用

Except in oogonium stage, annulate lamellae frequently appear in the ooplasm distal away from the nucleus.

除了在卵原细胞以外，环礼片层一般都分布在远离细胞核的卵质中。

The ultrastructure and formation process of the annulate leamellae ( AL) in mouse spermatids were observed.

本研究观察了小鼠精子细胞内环孔板的超微结构和形成过程。

Annulate lamellae consist of parallel flat sacs with a length of 1.5& 2.0 μ m.

环层板是由长1.5～2.0μm、平行排列的扁囊组成。

To observe the morphological changes of apoptotic cell nucleus and annulate lamella in spleen of chick embryo.

目的：着重观察鸡胚脾脏凋亡细胞核及其环孔板的形态学变化。

Annulate Lamellae in The Embryonic Cells and The Graft Callus of Angiosperms

被子植物胚性细胞及嫁接愈伤组织中的环状片层

Ultrastructure of nucleus and annulate lamella of apoptotic cell in spleen of chick embryo

鸡胚脾脏凋亡细胞核及其环孔板的超微结构

Spontaneous Formation of Annulate Lamellae and nuclear pore complexes in Activated Xenopus Egg Extracts

非洲爪蟾卵提取物中环形片层及其核孔复合体的自发形成

Finally, the weight, the strength and the stability of the domed bulkhead with nonaxisymmetry sphere-conical transitional annulated shell of some middle-size submarine before and after optimization have been contrasted with examples.

最后用某中型艇的非轴对称球锥过渡环壳的球面舱壁进行实例分析，对比优化前后球面舱壁的重量值及强度与稳定性性能。

Design and Study of Dynamic Foundation of Annulated Column Which Sustains the Amplitude Airship in the Happy Valley in Beijing

北京欢乐谷聚能飞船圆环柱动力基础设计研究

Electron-deficient conjugated systems are often involved in a variety of annulation reactions as electrophiles. However, the phosphine-catalyzed annulations of electron-poor conjugated systems are rarely touched.

缺电子共轭体系作为亲电试剂可参与多种环化反应，而膦催化下其参与的环化反应却鲜有报道。

Based on frauhofer diffraction integral formula, the calculation and testing method of I_0 ( annulation)/ I_0 ( aperture) for different obstruction ratio of double reflection optical system are described in this paper.

本文从夫朗禾费积分公式出发，论述了不同遮拦比的双反射光学系统I0（环）/I0（孔）的计算与测试方法，并通过计算和测量获得了有实用价值的数据。

A developmental model was put forward, which included adjusting the administrative area, cultivating a growth-pole by using the whole superiority, forming a economic union and promoting the economic development for inner ring to outer annulation.

据此提出调整行政区划和产业布局，集中优势培育增长极，建立区域经济联合体，实行圈层梯度推进的发展模式。

The efficient method is compatible with several functional groups. ( 4) Recent advance in transition-metal-catalyzed annulation of alkynes for the synthesis of naphthalene derivatives was summarized.

该方法具有高效、良好的官能团兼容性；（4）综述了近年来过渡金属催化炔烃环化反应合成萘衍生物的研究进展；然后在介绍了锌盐催化下萘的衍生物的合成。

Thus, in this dissertation three novel phosphine-catalyzed annulation reactions of electron-deficient conjugated systems have been systematically investigated, and the following results have been achieved. 1.

因此，本论文系统地探索了三类膦催化下缺电子共轭体系参与的新颖环化反应，并取得了以下结果。