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光栅型荧光分光光度方法通则
General rules for grating fluorescence spectrophotometry
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光学仪器用玻璃分划尺 技术要求
Glass length scale for optical instruments technical specifications
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工具显微镜用测量刀
Measuring knives for the toolmaker's microscope
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五级金属线纹米尺
One meter matallic linearrule,Grade
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光学倾斜仪
Optical clinometer
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分格值为1′的光学测角比较仪
Optical spectrophotometer with one second's scale unit
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光学计量仪器用测帽
Gauge hat for optical metrical instrument
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计量光栅 玻璃光栅盘 技术要求
Metrology grating technology -- Technical requiremnts for grating disk of glass
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计量光栅 玻璃光栅尺 技术要求
Metrology grating technology -- Technical requiremnts for grating bar of galss
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