GB - Chinese national standards

Chemicals general method for determination of distillation characteristics of organic liquids(other than petroleum products)

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Microscopes—Interfacing dimensions for imaging components

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Microscopes—Marking of objectives and eyepieces

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Microscopes - Marking of stereomicroscopes

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Microscopes—Values,tolerances and symbols for magnification

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Microscopes—Reference system of polarized light microscopy

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Microscopes—Graticules for eyepieces

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Microscopes—Interfacing connection type C

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Microscopes - Interfacing connection for 35 mm SLR photo cameras

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Pressure type SF6 gas density monitor

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