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In the Bronze Age, they could make various metals, such as copper and bronze, but no iron.

在青铜器时代，他们可以制造各种不同的金属，像铜和青铜，但是没有铁。

In the Bronze Age, people could make tools of copper and bronze, but not iron.

到了青铜器时代，人们可以冶炼各种各样的金属，例如铜或青铜，但没有铁。

The bronze animal plaque is one of the representativeartifacts in the North China of Bronze age.

在中国北方考古的研究中，动物纹饰牌的研究开始的最早，也是学者们关注最多的问题。

The invention and application of the bronze mark that the mankind enter Bronze Age from the Neolithic Age .

青铜的发明与应用标志着人类从新石器时代进入了青铜时代。

Ancient Chinese bronze ware has a long history, brilliant bright, has eternal historical value and artistic value, is the history of human development, a sign of the times, with a 5000-year cultural history of China, in the Bronze Age is the world's advanced productive forces, in the history of human development, has an important position.

中国古代青铜器源远流长，绚丽璀璨，有着永恒的历史价值与艺术价值，是人类发展史上一个时代的标志，拥有着5000年文化历史的中国，在青铜器时代更是世界先进生产力的代表，在人类发展史上有着重要的地位。

According to the study on the large number of bronze ware unearthed in Lingnan region in nearly 20 years,the author thinks that not only the Lingnan area has its own local bronze culture,but also it is a very unique local culture.

本文通过对岭南地区近20年来出土的大批青铜器进行多方面研究，认为岭南地区不仅有自己本土的青铜文化，而且还是一种很有特色的地域文化。

They are the classic works, which all the bronze ware lovers who want to understand the bronze civilization must see.

是所有青铜爱好者了解青铜文明必看的经典之作。

One of these must-see exhibitions was the first display of bronze ware in South America in Nov. 2004, which greatly amazed Latin Americans for it fully showcased the complete evolution history of Chinese bronze.

这些必看的展览会之一，就是2004年十一月第一次在南美洲举行的铜器展览，曾经使拉丁美洲人大大震惊，因为它完整地展示了中国铜器的整个演化史。

There were funeral objects in the bronze coffin like bronze ware, beans and jars etc.

铜棺内随葬丰富的铜器和豆、罐等陶器。

The result of this study is good reference value to bronze protection and to ancient bronze culture exchange research.

本论文的研究结果对青铜器的保护以及青铜时代的文化交流研究均具有较好的参考价值。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。