第二，与超声波相比，应力波在检测过程中不用耦合剂，使得更容易操作；
Secondly, comparing with ultrasonic, stress wave does not use coupling and is easily used.
30升的耦合剂储蓄槽。自动化泵槽装置可以将其完全循环利用。可显示直观的电子层面。通过流量传感器和超声波地来对耦合剂进行连续监控。
30 litre couplant tank. automatic pumped supply with full recirculation. visual and electronic level display. continuous couplant monitoring by flow sensor and ultrasonically.
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