1 . 首先
7. wisdom n. 智慧;学识8. firstlyadv. 首先9. remove vt. 移动;搬开
2 . 首次
and has firstlydefinite expounded that carbonizing reaction process is a four phases reacting process ;, 并首次明确提出了碳化过程是一个四相浆态反应过程的观点;
3 . 论文首先
firstly, according to the spot circumstances , the influencing factors to the life cycle of polytetrafluoroethylene piston ring were analyzed and concrete measures to extend life cycle were presented ;论文首先根据现场的实际工况,分析了聚四氟活塞环寿命的影响因素,并提出了延长其使用寿命的具体措施;
4 . 文章首先
firstlythe article introduce virtual reality and its significance to the employee training in salt industry , then explains what VRML is and finally shows how to carry VR into execution in salt pond as a part of employees' training .文章首先介绍了虚拟现实并阐述了虚拟现实对盐