He was able to trace his ancestry back over 1 000 years.

Why would one person have two different ancestries?

为什么一个人会有两个祖先呢？

Application of anchor block and mechanical splicing of thick reinforcing bar connection in the nuclear island of Ling'ao Nuclear Power Station

岭澳核电站核岛粗钢筋连接中机械接头与锚固块的应用

For anchor block force calculation, there are three methods, i.e. primary estimation, empirical formula equation and computer assistant software.

管线锚固墩推力计算方法有估算法、公式法和计算机辅助程序计算法三种。苏丹Bamboo输油管线锚固墩的选择证明了这三种计算方法的正确性。

Origin analysis and treatment of anchor block cracking for Baiyanghe inverted siphon

白杨河倒虹吸镇墩裂缝成因分析及处理

So the root foundation can be a potential choice for the anchor block of suspension bridge.

根式基础用于悬索桥锚碇将成为一种新的选择。

The Corbel Supported Method for Constructing the Back Suspended Part of the Weight Anchor Block

悬索桥重力式锚碇锚体后悬段挑梁支撑法施工

How to Avoid the Oil Leak at Anchor Block of Long-distance Oil Pipeline

防止长输管道在固定墩处漏油的措施

Scheme Conception of Root Foundation and Anchor Block

根式基础及根式锚碇方案构思

Design and Calculation of Horizontal Anchor Block in Easy Hoisting Device

简易起重设备中水平地锚的设计与计算

The research shows that when cone angle is less than some value, its increase will decrease the deformation of an anchor and raise its field load greatly, and for a mono-strand anchor, reasonable cone angle varies from 6.5 ° to 7.5 °.

研究表明，当锥角小于某值时，较大的锥角能明显减小锚具变形；对于单孔锚具，合理的锥角介于6.5°～7.5°之间。

In this dissertation the structure design of drilling anchor integration operation devices and anchor cable installation device have been finished and the device structure has been optimized by three-dimensional modeling, combining kinematics, dynamics and finite element method for structure.

本论文通过三维建模，结合运动学、动力学和结构的有限元分析方法，完成了钻锚一体化作业装置和锚索安装装置的结构设计，优化了装置结构。

This paper presents the content and method of design and calculation of horizontal anchor block in hoisting device by using some examples.

地锚是起重系统的根基，对吊装作业的安全意义重大，本文通过实例介绍水平地锚设计计算的内容和方法。

The Design of New Style Soil Anchor KC-1 Expansion Device

新型土锚扩孔机具KC-1型扩孔器的研制

Suction Anchor Bucket Device and Platform with Bucket Foundations for Piling Operation

筒型基础和吸力锚筒水上沉桩装置

Compared with the conventional stuffing used for chilled cast anchor device, the new type stuffing for the same has two major advantages, firstly, it is non poisonous, non stimulus and is highly workable.

新型冷铸锚填料与传统的冷铸锚填料相比有两大优点：第一，无毒、无刺激性，施工性能好；

FEA of Pre-stressed Anchor Device under Stress and Dimension and Material Optimum of Anchor Head; "Anchorage, grip and coupler for prestressing tendons"

预应力锚具受力过程的有限元分析及锚圈的尺寸和材料优化GB/T14370-1993预应力筋用锚具、夹具和连接器

Study and Application of New type Stuffing for Chilled Cast Anchor Device

新型冷铸锚填料的研究及其应用

A New-style Steel Strand Full-bundle-extruding Anchor Device

一种新型的钢绞线整束挤压锚具

The author studied anchor device and construction equipments of the prestressed CFRP, and concludes its construction methods basing tests and practical applications.

研制了对碳纤维布施加预应力的锚具及施工机具，通过试验研究、工程实际应用形成了施工工艺。

Brandon Overstreet, a doctoral candidate in hydrology at the University of Wyoming, picked his way across the frozen landscape, clipped his climbing harness to an anchor in the ice and crept toward the edge of a river that rushed downstream toward an enormous sinkhole.

怀俄明大学（University of Wyoming）水文学博士研究生布兰登·奥弗斯特里特（Brandon Overstreet）在这片冰面上小心翼翼，将他的安全带系到冰层中的一个锚上，朝着一条向下流入巨大深坑的河流的边缘徐徐前进。