STAS 11200 455-1981 Graphical symbols GRAPHICAL SYMBOL FOR SUBSTANTIALLY LEVEL LOAD VOLTAGE CHARACTERISTIC《图形符号 大幅度水平负载电压特性的图形符号 》.pdf

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STAS 2165-1966 《大幅锯条螺丝扣大小》.pdf

QX T 130-2011 电离层突然骚扰分级.pdf

QX T 130-2011 电离层突然骚扰分级.pdf

MNOSZ 8747-1955 《铁路交通工具蒸汽火车突然打开的安全螺栓和应用》.pdf

UNE 21-818-1991 《潜在爆炸性环境的电力材料 防突然燃烧包裹“d”》.pdf

UNE 21-818-1989 《潜在爆炸性环境的电力材料 防突然燃烧包裹“d”》.pdf

STAS 1913 12-1988 Foundation ground DETERMINATION OF PHYSIGAL AND MECHANICAL CHARACTE- RISTICS OF EARTHES WITH GREAT BELLIES AND SHRINKAGES《地基 大幅膨胀和收缩的土壤的物理和机械属性测定》.pdf

ASTM D6157-1997(2003) Standard Practice for Determining the Performance of Oil Water Separators Subjected to a Sudden Release《用于突然释放的油 水分离器性能测定的标准操作规程》.pdf

ASTM D6157-1997(2011) 7500 Standard Practice for Determining the Performance of Oil Water Separators Subjected to a Sudden Release《测定突然释压时油 水分离器性能的标准操作规程》.pdf

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