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NF B35-512-1983 Laboratory glassware Glass hydrometers Conventional value for the thermal cubic expansion coefficient (for use in the preparation of measurement tables for liquids).pdf 3

NF B35-512-1983 Laboratory glassware Glass hydrometers Conventional value for the thermal cubic expansion coefficient (for use in the preparation of measurement tables for liquids).pdfNF B35-512-1983 Laboratory glassware Glass hydrometers Conventional value for the thermal cubic expansion coefficient (for use in the preparation of measurement tables for liquids).pdf

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NF B35-511-1983 Laboratory glassware Density hydrometers for general purpose Specifications Test methods and use 《实验室用玻璃器皿 一般用途密度液体比重计 规范 试验及使用方法》.pdf 19

NF B35-511-1983 Laboratory glassware Density hydrometers for general purpose Specifications Test methods and use 《实验室用玻璃器皿 一般用途密度液体比重计 规范 试验及使用方法》.pdfNF B35-511-1983 Laboratory glassware Density hydrometers for general purpose Specifications Test methods and use 《实验室用玻璃器皿 一般用途密度液体比重计 规范 试验及使用方法》.pdf

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NF B35-510-1983 Laboratory glassware Hydrometers Principles of construction and adjustment 《实验室用玻璃器皿 液体比重计 制造与调节原理》.pdf 6

NF B35-510-1983 Laboratory glassware Hydrometers Principles of construction and adjustment 《实验室用玻璃器皿 液体比重计 制造与调节原理》.pdfNF B35-510-1983 Laboratory glassware Hydrometers Principles of construction and adjustment 《实验室用玻璃器皿 液体比重计 制造与调节原理》.pdf

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NF A45-256-1987 Iron and steel Hot-rolled Sections Special T H 《钢铁 热轧材 型材 特殊T、H型钢》.pdf 11

NF A45-256-1987 Iron and steel Hot-rolled Sections Special T H 《钢铁 热轧材 型材 特殊T、H型钢》.pdfNF A45-256-1987 Iron and steel Hot-rolled Sections Special T H 《钢铁 热轧材 型材 特殊T、H型钢》.pdf

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NF A45-255-1983 IRON AND STEEL PARALLEL FLANGE CHANNEL SECTIONS (UAP -SECTIONS) 《冶金产品 热轧材 UaP型钢（平行宽缘的）》.pdf 3

NF A45-255-1983 IRON AND STEEL PARALLEL FLANGE CHANNEL SECTIONS (UAP -SECTIONS) 《冶金产品 热轧材 UaP型钢（平行宽缘的）》.pdfNF A45-255-1983 IRON AND STEEL PARALLEL FLANGE CHANNEL SECTIONS (UAP -SECTIONS) 《冶金产品 热轧材 UaP型钢（平行宽缘的）》.pdf

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NF A45-216-1996 Hot rolled steel equal flange tees with radiused root and toes Dimensions and tolerances on shape and dimensions 《热轧等边园弧根T型钢 尺寸和形状、尺寸公差》.pdf 10

NF A45-216-1996 Hot rolled steel equal flange tees with radiused root and toes Dimensions and tolerances on shape and dimensions 《热轧等边园弧根T型钢 尺寸和形状、尺寸公差》.pdfNF A45-216-1996 Hot rolled steel equal flange tees with radiused root and toes Dimensions and tolerances on shape and dimensions 《热轧等边园弧根T型钢 尺寸和形状、尺寸公差》.pdf

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NF A45-215-1995 Hot rolled taper flange I sections Tolerances on shape and dimensions 《热轧制的钭缘工字型钢 形状和尺寸公差》.pdf 8

NF A45-215-1995 Hot rolled taper flange I sections Tolerances on shape and dimensions 《热轧制的钭缘工字型钢 形状和尺寸公差》.pdfNF A45-215-1995 Hot rolled taper flange I sections Tolerances on shape and dimensions 《热轧制的钭缘工字型钢 形状和尺寸公差》.pdf

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NF A45-211-1993 Structural steel I and H sections Tolerances on shape and dimensions 《工字型和H型结构钢 形状和尺寸公差》.pdf 10

NF A45-211-1993 Structural steel I and H sections Tolerances on shape and dimensions 《工字型和H型结构钢 形状和尺寸公差》.pdfNF A45-211-1993 Structural steel I and H sections Tolerances on shape and dimensions 《工字型和H型结构钢 形状和尺寸公差》.pdf

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NF A06-510-1957 Chemical analysis of lead Colorimetric determination of zinc 《铅的化学分析 锌的比色法测定》.pdf 4

NF A06-510-1957 Chemical analysis of lead Colorimetric determination of zinc 《铅的化学分析 锌的比色法测定》.pdfNF A06-510-1957 Chemical analysis of lead Colorimetric determination of zinc 《铅的化学分析 锌的比色法测定》.pdf

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NF A06-508-1957 Chemical analysis of lead Colorimetric determination of cadmium 《铅的化学分析 镉的比色法测定》.pdf 3

NF A06-508-1957 Chemical analysis of lead Colorimetric determination of cadmium 《铅的化学分析 镉的比色法测定》.pdfNF A06-508-1957 Chemical analysis of lead Colorimetric determination of cadmium 《铅的化学分析 镉的比色法测定》.pdf

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