SPC GB/T 31057.3-2018 PDF

Published Date: 01/01/2020

Non-destructive testing -- Image quality of radiographs -- Part 4: Experimental evaluation of image quality values and image quality tables (TEXT OF DOCUMENT IS IN CHINESE)

Published Date: 07/01/2019

Railway applications -- Fixed installations -- Electrical safety,earthing and the return circuit -- Part 3: Mutual interaction of a.c. and d.c. traction systems (TEXT OF DOCUMENT IS IN CHINESE)

Published Date: 12/01/2019

Wind turbines -- Guide for infrared detection of rotor blade (TEXT OF DOCUMENT IS IN CHINESE)

Published Date: 07/01/2019

Guide for ancillary service of grid connected power plants (TEXT OF DOCUMENT IS IN CHINESE)

Published Date: 01/01/1998

Determining the Resolving Power of Photographic Materials, Method for

Published Date: 01/01/1998

Photography - Roll film cameras - Back window location

Published Date: 03/18/1992

American National Standard for Photography - Front Lens Barrels up to 127 mm - Dimensions Important to the Connection of Auxiliaries

Published Date: 07/21/1999

Photography (Optics) - Photographic Lenses - Measurement Method for Distribution of Illuminance

Published Date: 01/01/1998

American National Standard for Photography (Lenses) - Visual and Photographic Resolving Power - Measurement Method

Published Date: 01/01/1998

Optics and Optical Instruments - Quality Evaluation of Optical Systems - Determination of Distortion