A cat retracts its claws.猫缩进它的爪子.The split graph is given endomorphism images are retracts.给出了任意自同态像图都是收缩核的分裂图的结构.The nose unit is twin - wheeled and retracts rearward.前鼻单元是双轮并向后收起....
A totally hypothetical high - speed , Metalclad carrier . The control car retracts into hull to lower wind resistance.一架设想中的 高速 全金属硬式飞艇,为了降低阻力,控制仓能够缩进蒙皮中.The split graph is given endomorphism images are retracts.给出了任意自同态...