防水油毡,防水毡;
Fig.9 illustrates a simple flat roof, consisting of timber bearers covered with timber boarding and finished with several layers of tar felt.
图9所示为一个简单的平屋顶它由木承梁组成并铺以木板,再铺几层油毡防水。
In this example, the first layer of tar felt is nailed to the boarding and the subsequent layers are bonded to each other in hot tar.
此例中,第一层油毡是用钉子钉在木板上的。上面的几层油毡是用热沥青粘合起来的。
Roofing felt, of bonded fibre fabrics in which the textile fibres are bonded with tar or similar substance
屋顶油毡,用焦油或类似材料将纺织纤维粘合在一起而成的纤维粘合织物制成
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