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| pure flow; straight line motion; streamline motion | |||
| direct flow | |||
| streamlined flow | |||
| linear flow; rectilineal flow; straight-line flow; straight-line motion | |||
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直线 流动 : 4 phrases in 3 subjects |
| Electric machinery | 2 |
| Electronics | 1 |
| Technology | 1 |
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