even numbers短语⁴⁷⁹³⁷ 基本例句 双数 The advantage of merging vector into the screw with moment can be retained by this screw matrix method, and the shortcoming of the past method in remembering even numbers is avoided. 这种旋量——矩阵方法能保留旋量融矢量与矢量矩于一体的优点，却避免以往对偶数记法的缺点。 cnki