The gymnast poised herself on the balance beam gracefully.体操运动员优美地立在平衡木上.The gymnast performed on the balance beam with an easy grace.体操运动员在平衡木上表演得优美自如.The gymnast poised herself on the balance beam.体操运动员在平衡木上保持平衡.a lith...
焊核区晶内有少量位错.The dislocation density is low in the nugget zone.回顾和评述了晶内铁素体的发现、发展及其与组织控制的关系.The discovery and current advances of intragranular ferrite and its relation with microstructure control are reviewed.电子屏蔽理论分析表明,电场...