译：GB/T 3257.12-1999 Methods for chemical analysis of bauxite—Determination of vanadium pentoxide content—N-benzoyl-N-phenythyroxylamine photometric method

译：GB/T 3257.18-1999 Methods for chemical analysis of bauxite—Determination of sulfur content—Direct combustion-iodometric method

译：GB/T 3257.11-1999 Methods for chemical analysis of bauxite—Determination of chromium oxide content—Flame atomic absorption spectrophotometric method

译：GB/T 7584.2-1999 Acoustics—Hearing protectors—Part 2:Estimation of effective A-weighted sound pressure levels when hearing protectors are worn

译：GB/T 3257.15-1999 Methods for chemical analysis of bauxite—Determination the total content of rare earth oxide—Tribromo-arsenazo photometric method

译：GB 17835-1999 General specification for water extinguishing agent series

译：GB/T 3257.13-1999 Methods for chemical analysis of bauxite—Determination of zinc content—Flame atomic absorption spectrophotometric method

译：GB/T 3257.17-1999 Methods for chemical analysis of bauxite—Determination of phosphorus pentoxide content—Molybdenum blue spectrophotometric method

译：GB/T 3257.16-1999 Methods for chemical analysis of bauxite—Determination of gallium oxide concent—Rhodamine B-extraction photometric method

译：GB/T 3257.10-1999 Methods for chemical analysis of bauxite—Determination of manganese oxide content—Flame atomic absorption spectrophotometric method