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push-pull; push-pull operation | |||
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push-pull |
push-pull : 16 phrases in 10 subjects |
Automated equipment | 2 |
Chemistry | 1 |
Computers | 2 |
Earth sciences | 1 |
Electronics | 3 |
Information technology | 2 |
Mechanic engineering | 2 |
Metallurgy | 1 |
Natural sciences | 1 |
Transport | 1 |