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blank off ['blæŋk'ɔf]
auto.	【动】熄灭; 用塞关闭
chem.	加盲板
el.	关闭部分管道; 阻塞; 熄灭
geophys.	断开【路】
mech.eng.	掩盖; 塞住; 关〔封〕闭; 消隐; 射线熄灭; 用法兰堵住; 封锁; 使不通行

blank off: 7 phrases in 5 subjects

Chemistry	1
Electronics	2
Refrigeration	1
Space	1
Technology	2