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| 金属敷层壳背，衬垫，底层 | |||
| 金属壳〔背，衬垫，底层，敷层〕; 电子射线管的金属敷层; 金属壳〔背，衬垫〕 | |||
| 金属包覆层; 金属壳 | |||
| 金属壳衬垫; 金属壳背; 金属垫衬; 金属垫板 | |||
| 金属敷层 | |||
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metal backing : 6 phrases in 3 subjects |
| Electronics | 2 |
| Metallurgy | 2 |
| Technology | 2 |
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