单词	sectional density
释义	sectional density 截面密度
随便看	activity based depreciation activity-based physical education curriculum activity-baseds activity-based simulation activity breakthrough activity buffer activity build-up activity center activity-centered activity chain address activity charge activity chart activity(chemical) activity classification activity code activity-coefficient activity coefficient activity coefficient of nitrogen activity coefficient of seawater activity concentration activityconstant activity constant activity content activity control form activity correction factor 众议成林众说纷揉众说纷纭众醉独醒众难群疑众难群移优优1 优2 优4 03177 03178 03179 03180 03181 03182 03183 03184 03185 03186