1·Examining the period 1870-1920, Keyssar concentrates on Massachusetts, where the historical materials are particularly rich, and the findings applicable to other industrial areas.
Keyssar 考察了1870-1920年这段时期，重点研究了马萨诸塞州，那里的历史资料特别丰富，研究结果也适用于其他工业区。
2·Archives are the most basic historical materials.
档案是研究历史的最基本史料。
3·Archives are the basic historical materials to study history.
档案是研究历史最基本的史料。
4·Archives are the most basic historical materials of history research.
档案是研究历史的最基本史料之一。
5·By studying the related historical materials, she has organized a set of rigorous system.
通过对历史相关资料的整理，她抽绎出一套严密的体系。
6·Thus it has important significance as historical materials for the study of the Han Dynasty.
汉赋对于研究汉代历史有着重要的史料价值。
7·Until now, we can find the influence of this book from many new historical materials in the market.
直到今天，我们还可以在很多新出的历史读物中发现它的影子。
8·Based on historical materials of Three Circle Factory, a Cobb - Douglas function of production is established.
本文以三环厂的历史资料为依据，建立了柯布-道格拉斯生产函数。
9·But from the various fragments of historical materials, we are able to assume that his work reached a high level.
但是，从各种片段史料，我们能够承担，他的工作达到了较高水平。
10·Within these materials, several pieces provide us historical materials to rearrangement Wang Shu's individual resume.
其中，有多篇奏章能为我们提供整理王恕履历的史料。