香港六合彩开奖 2896:2001

No disponible en 别蝉辫补帽辞濒

Publicado (贰诲颈肠颈贸苍 3, 2001)

Esta publicaci贸n se revis贸 y confirm贸 por 煤ltima vez en 2017. Por lo tanto, esta versi贸n es la actual.

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Resumen

This International Standard specifies a method for the determination of the water absorption of rigid cellular plastics

by measuring the buoyant force on a test specimen after immersion under a 50 mm head of water for 4 days.

Corrections are specified to take account of any change in volume of the specimen and also to correct for the

volume of water in the cut surface cells of the specimen. The water absorption is expressed as the average, for

several specimens, of the percentage increase in volume relative to the original volume.

The method described is intended for quality control and for use in product specifications.

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