火中取栗
pull the chestnuts out of the fire
pull someone’s chestnuts out of the fire
火/气探测和消防集中控制矩阵(MATRIX)板
integrated control (Matrix) panel of FG detection and fire-fighting system
活性氧中间体ROI
Reactive oxygen intermediates ROI
活性氮中间体
reactive nitrogen intermediates
活塞缸筒中心线
piston cylinder centerline
活动中梁底架
underframe with sliding center sill
活性中间体
active catalytic intermediate
reactive intermediate
active intermediate
霍浦金分布集中度系数
Hopkins’ coefficient of aggregation