资质认证 ISO 4311:1979 Anionic and non-ionic surface active agents — Determination of the critical micellization concentration — Method by measuring surface tension with a plate, stirrup or ring 1979-05-31 ISO 5122:1979 Documentation — Abstract sheets in serial publications 1979-05-31 ISO 4801:1979 Glass alcoholometers and alcohol hydrometers not incorporating a thermometer 1979-05-31 ISO 273:1979 Fasteners — Clearance holes for bolts and screws 1979-05-31 ISO 3443-1:1979 Tolerances for building — Part 1: Basic principles for evaluation and specification 1979-05-31 ISO 4139:1979 Ferrosilicon — Determination of aluminium content — Flame atomic absorption spectrometric method 1979-04-30 ISO 5679:1979 Equipment for working the soil — Disks — Classification, main fixing dimensions and specifications 1979-03-31 ISO 4002-1:1979 Equipment for sowing and planting — Part 1: Concave disks type D1 — Dimensions 1979-03-31 ISO 5699:1979 Agricultural machines, implements and equipment — Dimensions for mechanical loading with bulk goods 1979-03-31 ISO 5680:1979 Equipment for working soil — Tines and shovels for cultivators — Main fixing dimensions 1979-03-31 IEC 60554-1:1977/COR1:1979 Corrigendum 1 - Specification for cellulosic papers for electrical purposes. Part 1: Definitions and general requirements 1979-02-28 ISO 1113:1979 Information processing - Representation of the 7- bit coded character set on punched tape 1979-01-31 ISO 1113:1979 Information processing - Representation of the 7- bit coded character set on punched tape 1979-01-31 ISO 5455:1979 Technical drawings — Scales 1979-01-31 ISO 1113:1979 Information processing — Representation of the 7- bit coded character set on punched tape 1979-01-31 ISO 5272:1979 Toluene for industrial use — Specifications 1979-01-31 ISO 6206:1979 Chemical products for industrial use — Sampling — Vocabulary 1979-01-31 ISO 5515:1979 Fruits, vegetables and derived products — Decomposition of organic matter prior to analysis — Wet method 1979-01-31 ISO 4123:1979 Belt conveyors — Impact rings for carrying idlers and discs for return idlers — Main dimensions 1979-01-31 ISO 5703:1979 Equipment for vine cultivation and wine making — Grape presses — Methods of test 1979-01-31
