Unified system of design documentation. Conventions of wires and terminal connections of electrical elements, equipment and subcircuits in circuit diagrams
Ambient air. Determination of total (gas and particle phase) polycyclic aromatic hydrocarbons. Collection on sorbent-backed filters with gas chromatographic/mass spectrometric analyses
Automobile roads of general use. Mineral materials for preparing asphalt mixtures. Volumetric-functional design system. Method for determination of loss of mass under the action of sodium sulfate or magnesium sulfate