axial double mechanical seal

例句：

1. 1. The machine has an axial design that makes it easy to adjust the settings.
   这台机器设计有轴向，便于调整设置。
2. 2. The axis of the planet revolves around the sun.
   行星的轴心围绕太阳旋转。
3. 3. He placed the screw on the axial hole in the table.
   他把螺丝放在桌子的轴孔里。
4. 1.They bought a double bed for their new apartment.
   他们为他们的新房买了一张双人床。
5. 2.The double doors open to the outside.
   双开门通向外面。
6. 3. She had two children, each with a double bed.
   她有两个孩子，每个都有一张双人床。