This truly portable seismometer comes with a robust automatic mass locking and unlocking feature, designed to prevent unintentional damage during field operations and transportation.

• 这是真正的便携地震计,具有坚固的自动质量锁定及去除锁定特性,设计用以防止在野外现场操作和运输中可能发生的没有意识到的损害。