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| 减低剂; 软化剂 | |||
| 异径接头; 减压［振］器; 缩径管［大小头］; 减速器 | |||
| 倍减器; 降低器; 降压变压器 | |||
| 降低剂 | |||
| 分频器; 降氏器 | |||
| понизитель: 14 phrases in 4 subjects |
| Drilling | 2 |
| General | 5 |
| Oil / petroleum | 1 |
| Technology | 6 |
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