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等高棱镜
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等高棱镜
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大地测量仪器
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contour prism
等高棱镜
天文测量仪器中,棱镜等高仪的主要部件。用于观测经过同一等高圈的一组恒星,记录通过的时刻并测出经度和纬度。常见的等高棱镜有60°和45°。
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reactor hot start-up
reactor internals
reactor material chemistry
reactor natural circulation
reactor neutrino
reactor neutron source
reactor period
reactor physical start up
reactor physical start-up
reactor physical start-up test
reactor physics
reactor physicscal experiment
reactor poison
reactor poisoning
reactor power
reactor power coefficient
reactor pressure vessel
reactor-produced medical radionuclide
reactor protection system
reactor reflector
reactor shield
reactor source terms
reactor srtuctral mechanics
reactor stability
reactor structural material
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