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backup battery; secondary battery | |||
extra battery | |||
spare battery; standby battery | |||
reserve battery; reserve cell | |||
emergency cell | |||
stand-by battery; battery backup | |||
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battery backup | |||
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emergency battery |
备用 电 池 : 22 phrases in 10 subjects |
Agriculture | 1 |
Automobiles | 3 |
Aviation | 1 |
Business | 3 |
Earth sciences | 1 |
Electronics | 3 |
Metallurgy | 2 |
Oil / petroleum | 1 |
Racing and motorsport | 1 |
Technology | 6 |