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振弦式（ＶＷ）传感器用于监测大坝安全已有许多年历史，现仍继续用于各种用途。介绍传感器的原理及其有众多用途的原因。
Vibrating wire (VW) sensors have been used to monitor dam safety for many years and continue to be used for a variety of purposes. Introduce the principle of the sensor and its reason for many uses.