组合使用关键词、标准类型、状态与 ICS 分类，快速定位所需国家标准。
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GB/T 24197-2009
Manganese ores - Determination of iron，silicon，aluminium，calcium，barium，magnesium，potassium，copper，nickel，zinc，phosphorus，cobalt，chromium，vanadium，arsenic，lead，titanium and vanadium - Inductively coupled plasma atomic emission spectrometry
GB/T 24193-2009
Chromium ores and concentrates - Determination of aluminium, iron , magnesium and silicon content - Inductively coupled plasma atomic emission spectrometry
GB/T 24192-2009
Chromium ores - Determination of particle size by sieving
GB/T 397-2009
Specification of coal for coke making
GB/T 23810-2009
Specification of coal for direct liquefaction
GB/T 5751-2009
Chinese classification of coals
GB/T 23561.9-2009
Methods for determining the physical and mechanical properties of coal and rock - Part 9: Methods for determining the triaxial strength and deformation parameters of coal and rock
GB/T 23561.8-2009
Methods for determining the physical and mechanical properties of coal and rock - Part 8: Methods for determining the deformation parameters of coal and rock
GB/T 23561.7-2009
Methods for determining the physical and mechanical properties of coal and rock - Part 7: Methods for determining the uniaxial compressive strength and counting softening coefficient
GB/T 23561.6-2009
Methods for determining the physical and mechanical properties of coal and rock - Part 6: Methods for determining the moisture content of coal and rock
GB/T 23561.5-2009
Methods for determining the physical and mechanical properties of coal and rock - Part 5: Methods for determining the water absorbability of coal and rock
GB/T 23561.4-2009
Methods for determining the physical and mechanical properties of coal and rock - Part 4: Methods for calculating the porosity of coal and rock
GB/T 23561.3-2009
Methods for determining the physical and mechanical properties of coal and rock - Part 3: Methods for determining the block density of coal and rock
GB/T 23561.2-2009
Methods for determining the physical and mechanical properties of coal and rock - Part 2: Methods for determining the true density of coal and rock
GB/T 23561.1-2009
Methods for determining the physical and mechanical properties of coal and rock - Part 1: General requirements for sampling
GB/T 18342-2009
Specifications of coal for chain and travelling grate stoker boiler
GB/T 23251-2009
Guideline for coal used in coal chemical conversion
GB/T 23263-2009
Determination of asbestos in products
GB/T 23178-2008
Eddy-flow micro-bubble flotation column
GB/T 22584-2008
General technical specification for the blasting-smoke purifying equipment for mine