weak in在 ... 方面弱／差的weakadj.弱的；虚弱的；无力的；差的；淡薄的weak foundation pit软土层基坑weak moving targets弱小多目标weak-back ferrule软背套圈weak c-supplement弱c-补weak and degenerate衰颓weak BCK-algeb'raweak direct product弱直积weak-field method弱场法weakform efficiency弱式有效weak current system弱电系统