The product features 2-SPDT dry contacts, an internal alarm, and a blue finish that is not confused with fire alarm stations. Auxiliary contacts can be used for remote annunciation.
2
采用高速摄影法和电极触点法，对干砂消失模铸造金属液的充填形态进行了初步研究。
The pilot study was done on the filling shape of liquid metal in lost foam process with dry sand by using rapid photography method and contact time method.
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