laser earthquake alarm [地震] 激光地震报警器
earthquake alarm system 地震预警系统
laser r earthquake alarm 激光地震报警器
pre alarm earthquake 预警地震
His inventions include a guide robot, an earthquake alarm and an electronic door lock.
他的发明包括一个导盲机器人、一台地震报警器和一把电子门锁。
The utility model relates to an earthquake alarm which is formed by the connection of a power circuit, a vibration sensor, an alarm delay control circuit and a sound alarm circuit.
本实用新型涉及一种地震报警器，由电源电路、震动传感器、报警延时控制电路和声响报警电路连接构成。
The howler monkeys sounded an alarm call just after the earthquake.
吼猴们在地震一来就发出了警报呼叫。
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