资质认证
- ISO 1745:1975
- Information processing - Basic mode control procedures for data communication systems
- 1975-02-25
- ISO 1745:1975
- Information processing - Basic mode control procedures for data communication systems
- 1975-02-25
- ISO 530:1975
- Aircraft — General purpose push-pull single-pole circuit-breakers — Dimensions
- 1975-01-31
- ISO 2858:1975
- End-suction centrifugal pumps (rating 16 bar) — Designation, nominal duty point and dimensions
- 1975-01-31
- ISO 1745:1975
- Information processing — Basic mode control procedures for data communication systems
- 1975-01-31
- ISO 237:1975
- Rotating tools with parallel shanks — Diameters of shanks and sizes of driving squares
- 1975-01-31
- ISO 504:1975
- Turning tools with carbide tips — Designation and marking
- 1975-01-31
- ISO 522:1975
- Special tolerances for reamers
- 1975-01-31
- ISO 3199:1975
- Sodium chlorate for industrial use — Determination of chlorate content — Dichromate titrimetric method
- 1975-01-31
- ISO 3295:1975
- Narrow bandsaw blades for woodworking — Dimensions
- 1975-01-31
- IEC 60235-9:1975
- Measurement of the electrical properties of microwave tubes - Part 9: Crossed-field amplifier tubes
- 1974-12-31
- IEC 60061-1F:1975
- Supplement 6 - Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 1: Lamp caps
- 1974-12-31
- IEC 60061-3F:1975
- Sixth supplement - Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 3: Gauges
- 1974-12-31
- IEC 60061-2D:1975
- fourth supplement - Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 2: Lampholders
- 1974-12-31
- IEC 60530:1975
- Methods for measuring the performance of electric kettles and jugs for household and similar use
- 1974-12-31
- IEC 60235-1A:1975
- Measurement of the electrical properties of microwave tubes - Part 1: Terminology - First supplement
- 1974-12-31
- IEC 60510-1:1975
- Methods of measurement for radio equipment used in satellite earth stations. Part 1: General
- 1974-12-31
- IEC 60151-14:1975
- Measurements of the electrical properties of electronic tubes and valves. Part 14: Methods of measurement of radar and oscilloscope cathode-ray tubes
- 1974-12-31
- IEC 60498:1975
- High-voltage coaxial connectors used in nuclear instrumentation
- 1974-12-31
- IEC 60528:1975
- Expression of performance of air quality infra-red analyzers
- 1974-12-31
