有许多历史建筑，尤其是那些秦。

There are lots of historical buildings there, especially those of Qin Dynasty.

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因此，中国铁道建筑总公司组织石家庄铁道学院、铁十五工程局有关科研人员，在“引大入秦”工程24号隧洞开展软管通风技术的研究和试验。本文是该课题的部分测试结果。

Hence, flexible pipe ventilation technique is developed and tested in the No. 24 tunnel of a water engineering some of the test results are introduced in this paper.

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