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split ring; snap ring | |||
ring key | |||
cyclic bond; cyclic link | |||
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cyclic bond; cyclic link; cyclic linkage |
环键 : 48 phrases in 13 subjects |
Agriculture | 2 |
Chemistry | 12 |
China | 2 |
Communications | 1 |
Electric machinery | 4 |
Electronics | 3 |
General | 2 |
Information technology | 1 |
Oil / petroleum | 1 |
Plastics | 1 |
Polymers | 1 |
Technology | 17 |
Telecommunications | 1 |