Browse Standards
Found: 225892 — page 4553 of 4707
Withdrawn
GB/T 7491-1987 — Water quality--Determination of volatile phenolic compounds--After distillation with bromine method
National·Recommended
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$79.00PDF
Valid
GB/T 7492-1987 — Water quality--Determination ofBHC and DDT--Gas chromatography
National·Recommended
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$199.0015 pages
Valid
GB/T 7493-1987 — Water quality. Determination of nitrogen (nitrite). Spectrophotometric method
National·Recommended
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$40.004 pages
Valid
GB/T 7494-1987 — Water quality. Determination of anionic surfactants. Methylene blue spectrophotometric method
National·Recommended
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$199.006 pages
Superseded
GB/T 7496-1987 — Information processing systems--Data communication--High-level data link control procedures--Frame structure
National·Recommended
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$325.00PDF
Superseded
GB/T 7497.1-1987 — Microprocessor system bus I, 8-bit and 16-bit data--Part 1: Functional description with electrical and timing specifications
National·Recommended
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$435.00PDF
Superseded
GB/T 7497.2-1987 — Microprocessor system bus I, 8-bit and 16-bit data--Part 2: Mechanical and pin descriptions for the system bus configuration with edge connectors (direct)
National·Recommended
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$115.00PDF
Superseded
GB/T 7497.3-1987 — Microprocessor system bus I, 8-bit and 16-bit data--Part 3: Mechanical and pin descriptions for the Eurocard configuration with pin and socket (indirect) connectors
National·Recommended
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$115.00PDF
Valid
GB/T 7509-1987 — Blank detail specification for microprocessor semiconductor integrated circuits
National·Recommended
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$404.008 pages
Withdrawn
GB/T 7513-1987 — Layout of the chinese ideographs on keyboard
National·Recommended
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$245.00PDF
Valid
GB/T 7514-1987 — Conversion between the 7-bit coded character set for information processing interchange and the 5-unit code for the telegraph service
National·Recommended
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$199.001 pages
Valid
GB/T 7515-1987 — Information processing. Coding of machine readable characters (MICR and OCR)
National·Recommended
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$105.008 pages
Withdrawn
GB/T 7519-1987 — Micrographics--Determination of residual thiosulphatein processed microfilm--Methylene blue method
National·Recommended
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$79.00PDF
Withdrawn
GB/T 7521-1987 — Multiple controllers in a CAMAC crate
National·Recommended
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$79.00PDF
Withdrawn
GB/T 7522-1987 — CAMAC-Serial highway interface systems
National·Recommended
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$79.00PDF
Withdrawn
GB/T 7523-1987 — Subroutines for CAMAC
National·Recommended
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$79.00PDF
Superseded
GB/T 7528-1987 — Rubber hose--Glossary of terms
National·Recommended
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$470.00PDF
Superseded
GB/T 7530-1987 — Rubber coated fabrics and products--Glossary of terms
National·Recommended
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$165.00PDF
Superseded
GB/T 7531-1987 — Determination of ash for organic chemical products
National·Recommended
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$35.00PDF
Superseded
GB/T 7532-1987 — Organic products for industrial use--Determination of content of heavy metals content--General method--Visual limit test
National·Recommended
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$80.00PDF
Superseded
GB/T 7534-1987 — Volatile organic liquids for industrial use--Determination of boiling range
National·Recommended
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$75.00PDF
Superseded
GB/T 7549-1987 — Synchronizing universal coupling with ball and sacket--Type, foundational parameters and main dimensions
National·Recommended
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$285.00PDF
Superseded
GB/T 755-1987 — General requirements for rotating electrical machines
National·Recommended
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$480.00PDF
Superseded
GB/T 7550-1987 — Synchronizing universal coupling with ball and sacket
National·Recommended
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$85.00PDF
Superseded
GB/T 7551-1987 — Resistance strain gage load cells
National·Recommended
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$455.00PDF
Withdrawn
GB/T 7553-1987 — 35mm Camera test chart target
National·Recommended
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$245.00PDF
Valid
GB/T 7554-1987 — Protected 5-unit numerical code for telegram service
National·Recommended
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$169.0015 pages
Withdrawn
GB/T 7555-1987 — General characteristics complying with the network performance objectives for 12 channel carrier telephone systems on open-wire pairs
National·Recommended
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$205.00PDF
Withdrawn
GB/T 7556-1987 — General characteristics complying with the network performance objectives for 60 channel carrier telephone systems on symmetric cable pairs
National·Recommended
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$245.00PDF
Withdrawn
GB/T 7557-1987 — General characteristics complying with the network performance objectives for 300 channel carrier telephone systems on standardized 1. 2/4. 4mm coaxial cable pairs
National·Recommended
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$165.00PDF
Superseded
GB/T 7559-1987 — FRP Laminates-test method for bearing strength by bolted joints
National·Recommended
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$105.00PDF
Superseded
GB/T 7560-1987 — Determination of mineral matter in coal
National·Recommended
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$70.00PDF
Superseded
GB/T 7561-1987 — Quality standard of coal for synthetic ammonia
National·Recommended
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$169.00PDF
Superseded
GB/T 7562-1987 — Quality specification of coal used for pulverized coal-fired boiler for power generation
National·Recommended
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$135.00PDF
Superseded
GB/T 7563-1987 — Qualty of coal for cement rotary kiln
National·Recommended
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$115.00PDF
Superseded
GB/T 7569-1987 — Wool--Determination of alkali content
National·Recommended
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$85.00PDF
Superseded
GB/T 7570-1987 — Wool--Determination of acid content
National·Recommended
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$80.00PDF
Superseded
GB/T 7571-1987 — Wool--Determination of solubility in alkali
National·Recommended
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$55.00PDF
Superseded
GB/T 7573-1987 — Textiles--Determination of PH of the aqueous extract
National·Recommended
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$169.00PDF
Superseded
GB/T 7574-1987 — Information processing--Magnetic tape labeling and file structure for information interchange
National·Recommended
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$265.00PDF
Superseded
GB/T 7575-1987 — Data communication--High-level data control procedures--Consolidation of elements of procedures
National·Recommended
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$1,764.00PDF
Superseded
GB/T 7576-1987 — Blank detail specification for case-rated bipolar transistors for high-frequency amplification
National·Recommended
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$300.00PDF
Valid
GB/T 7581-1987 — Dimensions of outlines for discrete semiconductor devices
National·Recommended
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$830.0012 pages
Superseded
GB/T 7582-1987 — Acoustics--Threshold of hearing by air conduction as a function of age and sex for otologically normal persons
National·Recommended
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$435.00PDF
Valid
GB/T 7583-1987 — Acoustics. Pure tone air conduction threshold audiometry. For hearing conservation purposes
National·Recommended
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$229.007 pages
Valid
GB/T 7584-1987 — Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation
National·Recommended
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$205.0016 pages
Withdrawn
GB/T 7585-1987 — Capacity series and radio-frequency channel arrangement for analog microwave relay systems
National·Recommended
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$135.00PDF
Valid
GB/T 7589-1987 — Code of chinese ideograms set for information interchange. The 2nd supplementary set
National·Recommended
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$355.0026 pages