您要查找的是不是：
- X置换子群 X-permutable subgroup
- X-s置换子群 X-s-permutable subgroup
- X-5半置换子群 X-s-semipermutable subgroup
- X-s-半置换子群 X-s-semipermutable subgroup
- 置换子群 permutable subgroup
- 条件置换子群 conditionally permutable subgroup
- 我们用x表示一个未知数。 We use x as the symbol for an unknown quantity.
- 子网掩码 subnet mask
- 他养了一群羊。 He keeps a flock of sheep.
- 找乐子 gad
- 战斗群 battle group
- 没食子酸 gallic acid
- 流星群 meteor swarm
- 子项 subitem
- 一群牛 a herd of cattle
- 圆锥滚子轴承 conical roller bearing
- 一群孩子在玩。 A bunch of children were at play.
- 我们用桩子固定帐篷。 We anchored the tent with pegs.
- 集群植物 colonial plants
- 一群野鹅从头顶飞过。 A flock of wild geese flew overhead.
