胎: 名词1.(幼体) foetus; embryo 短语和例子怀胎 become or be pregnant2.(怀孕或生育的次数) birth 短语和例子头胎 first baby; 一胎三子 triplet birth3.(衣服、被褥等的面子和里子之间的衬物) padding; stuffing; wadding 短语和例子棉花胎 the cotton padding o
2 . deduce the spectrum matrix of six - tire input under the conditions that the tractor is two - axle and four - wheel ( the rear wheel is double - tire ) and the artillery is one - axle and two - wheel 研究了牵引车为两轴四轮(后轮为双胎轮) ，火炮为单轴两轮的六轮输入谱矩阵。
