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| pneumatic compactor | |||
| air ram; air rammer; pneumatic beetle; pneumatic ram; pneumatic tamper | |||
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气 夯 : 35 phrases in 5 subjects |
| Bridge construction | 1 |
| Construction | 1 |
| Engineering geology | 5 |
| Hydroelectric power stations | 1 |
| Technology | 27 |
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