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| 滚珠支枢 | |||
| 球形冲头端 | |||
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ball point : 21 phrases in 10 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| International trade | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 2 |
| Plastics | 2 |
| Polymers | 1 |
| Technology | 5 |
| Textile industry | 3 |
| Wind Energy | 2 |
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