雁门关是山西商人西行的大关。
Yanmen pass is an important pass for Shanxi businessmen going west.
还有群山之中的雁门关、娘子关。
雁门关历史悠久，形势险要，自古以来就有重要的军事战略地位；
The Yanmen Pass has glorious history. It has important military strategy status since the ancient times .
研究了雁门关农牧交错带不同一年生牧草及饲料作物混播草地的产草量。
The yield of the annual forage and feed crops mixture grassland in agro-pastoral transitional zone of Yanmenguan region in Shanxi was studied.
研究了雁门关农牧交错带不同一年生牧草及饲料作物混播草地的产草量。
Effect of the annual forage and feed crops mixture at different rate and sow methods in the Shanxi region of agro-pastoral transitional zone was studied.
经由雁门关北上的商人有很多活跃在张家口、多伦、归化城、西包头、丰镇等处。
Many of them did their business actively in cities north of Yanmenguan, such as Zhangjiakou, Duolun, Guihua, West Baotou, and Fengzhen.
山西大（同）运（城）高速公路雁门关隧道，是我国最早开工建设的高速公路隧道。
Datong-Yuncheng Expressway Yanmenguan Tunnel, Shanxi Province, It is the first expressway tunnel constructed in China.
分析结果表明， 总体来看， 目前五台山、雁门关和临汾地区的水平主应力都未达到断层活动的临界值；
The results show that in Wutai, Yanmenguan and Linfen, the stress values have not reached the critical value, whereas in Yuncheng area, the values have reached the lower limit of the fault activity;
分析结果表明， 总体来看， 目前五台山、雁门关和临汾地区的水平主应力都未达到断层活动的临界值；
The results show that in Wutai, Yanmenguan and Linfen, the stress values have not reached the critical value, whereas in Yuncheng area, the values have reached the lower limit of the fault activity;
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