The failure mechanism and service status quo of hot piercer point in seamless steel tube were analyzed and its failure was mainly caused by piercer point collapsing nose, sticking steel and cracking.
对穿无缝钢管热穿孔顶头的失效机制和使用状况进行了分析研究，认为穿孔顶头的失效形式主要表现为顶头塌鼻、粘钢、 开裂。
The main characteristics of the automotive steering-by-wire system are briefly analyzed here. The developing status quo of this system and its prospect are also introduced.
简单分析汽车线控转向系统的主要特点，介绍该系统的开发现状，并论述该系统的发展前景。
According to the "Human Anatomy and histology" curriculum features and the status quo, we analyzed its limitations in teaching in normal university and its importance in biological education.
根据《人体组织与解剖学》课程特点及现状，分析了《人体组织与解剖学》课程在高师院校教学的局限性以及其在生物教育中的重要性，针对人解课的不足进行了教学改革的探索。
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