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firing box | |||
blasting machine; exploder; break-flash apparatus; spark test apparatus | |||
spark gap | |||
protective spark gap | |||
spark-gap |
explosor : 16 phrases in 6 subjects |
Antennas and waveguides | 1 |
Communications | 4 |
Electronics | 7 |
General | 1 |
Measuring instruments | 2 |
Technology | 1 |