Current Category: CN-GB - National standards
This document defines the general terms and definitions related to flow in aerospace fluid systems.
This document defines the general terms and definitions related to pressure in aerospace fluid systems.
This document defines the terms of portable alarm information display devices, specifies their classification, technical requirements, inspection rules, and markings, and describes the corresponding test methods.
This document applies to the design, manufacture, and inspection of portable alarm information display devices used in hazardous chemical workplaces.
Note: For the sake of clarity, in this document, "portable alarm information display devices" are referred to as "display devices".
This document specifies the main types of disaster accidents, basic principles, basic work requirements, mobilization of rescue forces, organizational and command requirements, on-site disposal procedures, and other requirements for fire emergency rescue.
This document is applicable to the emergency rescue work of national comprehensive fire rescue teams and government full-time fire brigades. Units' full-time fire brigades, volunteer fire brigades, and other rescue forces may refer to it when conducting emergency rescue operations.
This document specifies the technical requirements for the elderly-friendly transformation of mobile Internet applications (Apps), including perceptibility, operability, understandability, compatibility, and security requirements, and describes the corresponding testing methods.
This document is applicable to the development and testing of elderly-friendly functions in mobile Internet application products, including both standalone elderly-friendly application products and elderly-friendly modes embedded in applications.
This document describes the methods for determining ash content by high-temperature combustion, surface and ash impurity elements (aluminum, boron, calcium, cobalt, chromium, copper, iron, potassium, magnesium, manganese, molybdenum, sodium, niobium, nickel, phosphorus, lead, silicon, strontium, titanium, vanadium, tungsten, zinc, and zirconium) by inductively coupled plasma atomic emission spectrometry, inorganic anions by ion chromatography, inorganic cations by ion chromatography, oxygen and nitrogen content by pulse heating inert gas fusion-infrared absorption/thermal conductivity, boron, nitrogen, and phosphorus content by secondary ion mass spectrometry (SIMS), impurity element content by glow discharge mass spectrometry (GD-MS), and the indirect method for determining the nominal diamond purity.
This document is applicable to the determination of the chemical composition of synthetic diamonds.
This document provides a classification of urban road traffic information monitoring and display equipment, stipulates the general principles, requirements, and methods for their installation, and describes the verification methods.
This document is applicable to the planning, design, and construction of urban road traffic information monitoring and display equipment.
Note: Road traffic information monitoring and display equipment refers to the collective term for road traffic information monitoring devices and road traffic information display devices.
This document describes the rapid bias temperature instability (BTI) test method for silicon metal oxide semiconductor field-effect transistors (MOSFETs).
This document also defines the terminology related to the conventional BTI test method.
This document specifies the design requirements for preventing marine organisms and floating debris from clogging the water intake system of seawater direct-current cooling nuclear power plants.
This document is applicable to the design of water intake clogging prevention for seawater direct-current cooling nuclear power plants. The design of water intake clogging prevention for circulating water supply nuclear power plants can be used for reference.
This document specifies the composition, basic parameters, and operating conditions of the low-pressure blowing system used in the PET bottle blowing process, as well as technical requirements. It describes the test methods for the low-pressure blowing system and provides an evaluation method for energy-saving and emission-reduction effects.
This document is applicable to the design, manufacture, and inspection of PET bottle low-pressure blowing systems.
This document specifies the form, dimensions, tolerances, and marking methods of metric aerospace spline-type fastening structures.
This document is applicable to the design of metric aerospace spline-type fasteners.
This document specifies the general requirements and calculation models for short-circuit current of distributed new energy sources such as distributed photovoltaics and decentralized wind power, and describes the calculation method.
This document is applicable to the calculation of short-circuit current of distributed new energy sources connected to AC power systems with voltage levels of 10(6) kV and below.