词汇	looseness of bolt
释义	looseness of bolt 螺栓松动
随便看	active search active search engine Active searching active search list active search theory active secition active secition, live section active secretion active secretory process active section active securities active security active security model active sediment active sedimentary association active seeker active segment active segment table Active Seismic Experiment active seismic survey active self-albcating cluster Active Self-Allocating Active Self-correction Predictive Noise Control active self regulation active self-regulation