This paper analyses systematically the rod failure and off - center wear phenomena during applying rod in Shinan Oilfield.
针对现河采油厂史南油田抽油杆使用过程中存在的问题,对现场暴露出的抽油杆疲劳断裂、杆管弯曲造成杆管之间的偏磨现象进行了全面系统的分析,提出了有针对性的措施防止现场抽油杆偏磨、断裂。
The time has come to abandon the romantic view of Imperial history
现在已经到了抛弃帝国历史的幻想的时候了。
But the Third Reich had passed into history.
但是第三帝国却成了历史陈迹。
Two emperors in Chinese history loved calligraphy:
中国历史上有两个酷爱书法的皇帝，
Historians record how Rome fell.
历史学家记载了罗马帝国衰亡的经过.
Throughout history empires have waxed and waned.
历史上各个帝国革故鼎新均有兴衰.
The legacies of ancient empires and the features of history in the Middle East;
古代帝国的“遗产”与中东历史的特征
A Historic Investigation of the Deterioration of Ecological Environment of the Western Roman Empire;
西罗马帝国生态环境恶化的历史考察
The history of the late Qing, is the history which imperialism invaded as well as Chinese feudalism died out.
晚清历史,既是帝国主义侵略史,更是中国封建主义衰亡史。
On empire′s history,civilization and contact among civilizations;
论帝国的历史、文明和文明交往——《世界帝国丛书》总序
They were the most aggressive imperialists ever known to history.
他们是历史上最富有侵略性的帝国主义者。
Historians refer the fall of Rome to 410 A.D.
历史学家说罗马帝国的陷落是在公元410年。
With the fall of the Roman empire, historical evidence becomes scarce.
随着罗马帝国的沦落，历史性的证据变得稀少。
The Hopeless Conflict Structure: The Third Comments on Qing Empire in the World History;
无望的对抗格局——三论世界历史上的大清帝国
The Inevitable Choice of Chinese Culture: The Second Comment on Qing Empire in the World History;
汉文化的必然抉择——再论世界历史上的大清帝国
On Osman Empire, Its Rise and Decline and the Historical Experience and Lessons;
试论奥斯曼帝国的兴衰及其历史经验教训
Globalization and Imperialistic Conflict: History and Trend of Development;
全球化与帝国主义矛盾:历史及发展趋势
The Late Ottoman Empire to Examine the History of Education Reform (1789-1922)
奥斯曼帝国后期教育改革的历史考察（1789-1922）
Voice from the New World--Inca Empire in Garcilaso do la Vega s Description;
来自新大陆的历史述说——加西拉索的印卡帝国文明史观念评析