 |
| |||
| condensation pump | |||
| condensation vacuum pump; diffusion pump; diffusion vacuum pump | |||
| vacuum return pump | |||
| Diffusionspumpe: 2 短语, 2 学科 |
| 光学（物理学分支） | 1 |
| 核物理 | 1 |
|
| |||
| condensation pump | |||
| condensation vacuum pump; diffusion pump; diffusion vacuum pump | |||
| vacuum return pump | |||
| Diffusionspumpe: 2 短语, 2 学科 |
| 光学（物理学分支） | 1 |
| 核物理 | 1 |