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ball-and-ring method | |||
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ball and ring method | |||
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ball-and-ring method |
球环 法 : 25 phrases in 12 subjects |
Architecture | 1 |
Baseball | 1 |
Electronics | 1 |
General | 1 |
Hydroelectric power stations | 1 |
Metallurgy | 4 |
Oil / petroleum | 3 |
Plastics | 3 |
Polymers | 3 |
Technology | 5 |
Textile industry | 1 |
United Nations | 1 |