词汇	moment of a vector
释义	moment of a vector 向量矩
随便看	cut down/reduce one's family budget cutdowns cut-downs cut down smoking Cutdowns,Vein Cutdowns,Venous Cut down the accident rate cut down the branches of a tree cut down the commission cut down the consumption of raw materials cut down the cost cut down the curriculum Cut down the flow rate cut down their expenses cut down the norm for materials consumed cut down the number of persons employed cut down the outlay cut down the premium cut down the premium reserves cut down the price cut down the reinsurance commission cut down the size of the vessel cut down the staff Cut down the tall poppies cut down the tree