双向 刻度 | |
tech. | centre zero scale |
双向刻度 | |
met. | centre-zero scale |
仪表 | |
gen. | meter |
hydroel.st. | apparatus; instrument |
manag. | appearance |
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centre-zero scale | |||
centre zero scale | |||
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centre zero scale |
双向刻度 : 3 phrases in 2 subjects |
Electronics | 1 |
Metallurgy | 2 |