fixed survey meter造句

The BPI ( Bomb Power Indicator ) and FSM ( Fixed Survey Meter ) instrument fittings on the lawn were clearly visible to the many tourists visiting the castle, although few would have realised their significance.
The UK's Royal Observer Corps initially used the RSM No 2 as its prime radiation detector until it was replaced by the specially designed'Fixed Survey Meter'which used the same obsolete high voltage batteries as the RSM . The ROC retained the RSM No 2 for use during external'post attack'mobile monitoring surveys.
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