HJ 669-2013标准-分析测试百科网

本标准规定了测定水中可溶性磷酸盐的离子色谱法。本标准适用于地表水、地下水和降水中可溶性磷酸盐的测定。当进样体积为50 μl时,本标准测定可溶性磷酸盐(以PO₄^3-计)的方法检出限为0.007 mg/L,测定下限为0.028 mg/L

Water quality.Determination of phosphate.Ion chromatography

本标准规定了同步器齿环用挤制铜合金管(以下简称管材)的要求、试验方法、检验规则与包装、标志、运输和贮存、质量证明书及合同(或订货单)内容。本标准适用于汽车同步器齿环挤制铜合金管,也适用于机械、冶金、模具、造船、航空等行业中大中型耐磨件、中小型易耗件、常用摩擦副及自润滑环境零件等特种耐磨领域用的挤制

Copper alloy tube of extruded product for synchronizer rings

Resistance welding - Resistance welding equipment - Mechanical and electrical requirements (ISO 669:2016); German version EN ISO 669:2016

本标准适用于该品种真伪识别、田间鉴定及大田生产

Corn Xingmin 338

Diese Internationale Norm definiert und legt bestimmte identifizierte elektrische und mechanische Eigenschaften von Schweißeinrichtungen fest, die

Resistance welding - Resistance welding equipment - Mechanical and electrical requirements

Full Description ADOPTED_FROM:EN ISO 669:2016 This International Standard defines and specifies the [general] electrical

Resistance welding — Resistance welding equipment — Mechanical and electrical requirements (ISO 669:2016)

Resistance welding - Resistance welding equipment - Mechanical and electrical requirements (ISO 669:2016)

HJ 669-2013 标准查询与下载