They are characterized by longer period, higher sensitivity, multiple recording range, good stability, compact and small size.
其特点是周期长，灵敏度高，多量程，稳定性好，结构紧凑，体积小。
They are characterized by longer period, higher sensitivity, multiple recording range, good stability, compact and small size.
其特点是周期长，灵敏度高，多量程，稳定性好，结构紧凑，体积小。
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