GB - Chinese national standards

Quantification and purity analysis of nucleic acid concentration in solution—Ultraviolet spectrophotometry

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Quality technical requirements of primers and probes

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Formats specifications of nucleotide sequence database

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Determination of the activity of chitinase

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Calculation of load capacity of spur and helical gears—Part 1:Basic principles,introduction and general influence factors

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Calculation of load capacity of spur and helical gears—Part 2:Calculation of surface durability(pitting)

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Calculation of load capacity of spur and helical gears—Part 20:Calculation of scuffing load capacity—Flash temperature method

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Calculation of load capacity of spur and helical gears—Part 21: Calculation of scuffing load capacity—Integral temperature method

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Calculation of load capacity of spur and helical gears—Part 22: Calculation of micropitting load capacity

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Calculation of load capacity of spur and helical gears—Part 3:Calculation of tooth bending strength

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