资质认证
- ISO 2326:1972
- Continuous mechanical handling equipment for loose bulk materials — Aeroslides
- 1972-04-30
- ISO 1198:1972
- Sealed-beam landing lamps for aircraft — Dimensions
- 1972-04-30
- ISO 2308:1972
- Hooks for lifting freight containers of up to 30 tonnes capacity — Basic requirements
- 1972-02-29
- IEC 60244-3:1972
- Methods of measurement for radio transmitters. Part 3: Wanted and unwanted modulation
- 1971-12-31
- IEC 60235-5:1972
- Measurement of the electrical properties of microwave tubes. Part 5: Low-power oscillator klystrons
- 1971-12-31
- IEC 60061-1E:1972
- Supplement 5 - Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 1: Lamp caps
- 1971-12-31
- IEC 60061-1D:1972
- supplement 4 - Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 1: Lamp caps
- 1971-12-31
- IEC 60061-3E:1972
- Fifth supplement - Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 3: Gauges
- 1971-12-31
- IEC 60061-3D:1972
- Fourth supplement - Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 3: Gauges
- 1971-12-31
- IEC 60061-2C:1972
- third supplement - Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 2: Lampholders
- 1971-12-31
- IEC 60235-1:1972
- Measurement of the electrical properties of microwave tubes. Part 1: Terminology
- 1971-12-31
- IEC 60235-8:1972
- Measurement of the electrical properties of microwave tubes. Part 8: Backward-wave oscillator tubes - '0' type
- 1971-12-31
- IEC 60235-7:1972
- Measurement of the electrical properties of microwave tubes. Part 7: Gas-filled microwave switching devices
- 1971-12-31
- IEC 60235-6:1972
- Measurement of the electrical properties of microwave tubes. Part 6: High-power klystrons
- 1971-12-31
- IEC 60235-4:1972
- Measurement of the electrical properties of microwave tubes. Part 4: Magnetrons
- 1971-12-31
- IEC 60235-3:1972
- Measurement of the electrical properties of microwave tubes. Part 3: Disk seal tubes
- 1971-12-31
- IEC 60392:1972
- Guide for the drafting of specifications for microwave ferrites
- 1971-12-31
- IEC 60153-7:1972
- Hollow metallic waveguides - Part 7: Relevant specifications for square waveguides
- 1971-12-31
- IEC 60386:1972
- Method of measurement of speed fluctuations in sound recording and reproducing equipment
- 1971-12-31
- IEC 60394-2:1972
- Varnished fabrics for electrical purposes. Part 2: Methods of test
- 1971-12-31
