JIS B7525-1-2018 Hydrometers -- Part 1 Density hydrometers《比重计 第1部分 密度流体比重计》.pdf

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JIS B7525-3-2018 Hydrometers -- Part 3 Specific gravity meters《比重计 第3部分 比重计》.pdf

UNE 43-346-1987 《实验室玻璃 不包含温度计的酒精比重计和酒精的气体比重计》.pdf

SEV 4011-1964 《塑料 液体树脂 比重计法测定比重》.pdf

NEN 958-1971 Determination of density at 20 C of milk with a density hydrometer (lactometer)《乳品在20C时密度的液体比重计测定（乳比重计）》.pdf

JIS B7525-2-2018 Hydrometers -- Part 2 Liquefied petroleum gases density hydrometers《比重计 第2部分 液化石油气密度比重计》.pdf

STAS 5241-1965 《蓄电池比重计的吸管》.pdf

BS 718-1991 Specification for density hydrometers《流体比重计规范》.pdf

ICONTEC 1928-1984 《石油以及其衍生物：未加工石油以及液体石油制品，密度测量，通过液体比重计法（气体比重计）》.pdf

CNS 4894-1983 Specific Gravity Hydrometers《液体比重计》.pdf

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