With the opening of the visitor centre, sightseers will pass through metal detectors and queue up for tours amid air conditioning and plentiful lavatories.
在访客中心开放后，观光者们将在有空调和很多洗手间的地方，通过金属探测器、排队等候参观。
2
The trap based filter radiometer is a key unit of new optical radiometric standard detectors, and has potential applications in radiometric calibration of field, air borne and space borne sensors.
基于滤光片辐射计的新型光辐射标准探测器在野外、机载和星上高精度辐射定标中具有广阔的应用前景。
3
This paper presents two passive thermoluminescence radon accumulating detectors. These detectors are suitable for monitoring air radon concentration indoors, outdoors and in Wells of mines.