[国外标准] BS 4168-1-1981 Hexagon socket screws and wrench keys metric series Part 1 Specification for hexagon

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[国外标准] BS 2482-1981 Specification for timber scaffold boards

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[国外标准] BS 1042-1.1-1981 Measurement of fluid flow in closed conduits Part1.Pressure differential devices Se

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[国外标准] JIS B8609-1981 Performance Tests of Mechanical Draft Cooling Tower

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[国外标准] JIS B8412-1981 Combustion Safety Controllers for Guntype Oil Burners

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[国外标准] JIS B7520-1981 Indicating Micrometers

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[国外标准] JIS B6507-1981 General Code of Safety for Wood Working Machinery

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[国外标准] JIS E3020-1981 Change of Temperature Testing Method for Parts of Railway Signaling

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[国外标准] JIS C3001-1981 Resistance of Copper Materials for Electrical Purposes

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[国外标准] JIS L6308-1981 Reed wires

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[国外标准] JIS K7105-1981 Testing methods for optical properties of plastics

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[国外标准] JIS K7102-1981 Testing method for colour fastness of plastics upon exposure to light of the carbon a

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[国外标准] JIS K7101-1981 Testing method for colour fastness of plastics under window glass upon exposure to da

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[国外标准] JIS S3008-1981 Hand sewing needles

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[国外标准] JIS R2577-1981 Testing method for the rate of linear change of high alumina and fire clay plastic re

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[国外标准] JIS R2555-1981 Testing method for the rate of linear change of castable

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[国外标准] JIS R2501-1981 Refractory mortars

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[广东地方标准] DB44/T 1981-2017 潜水浮力调节器

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[计量检定规程] JJG 81-1981 公法线检查仪 检定规程

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[计量检定规程] JJG 80-1981 正切齿厚规 检定规程

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[计量检定规程] JJG 281-1981 波导测量线检定规程

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[计量检定规程] JJG 279-1981 WFG-1B型高频微伏表检定规程

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[计量检定规程] JJG 264-1981 容重器(试行)检定规程

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[计量检定规程] JJG 244-1981 感应分压器检定规程(试行)检定规程

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[计量检定规程] JJG 101-1981 接触式干涉仪

1.05 MB2020-11-01