... 气封力 seal force 气封电缆 gas-blocked cable ; blocked cable 迷宫式气封 labyrinth air seal ...
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gas-blocked cable 气封电缆
water-blocked cable 阻水型电缆
water blocked cable 防潮电缆
In the beginning, they put antennas on hilltops, then strung coaxial cable lines down to homes in the valley where most people, blocked by topography, had trouble receiving broadcast signals.
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