空隙量 meaning in English

void content
voidage

Testing methods for carbon fiber content and void content of carbon fiber reinforced plastics
碳纤维增强塑料的碳纤维含量及空隙量的测试方法
Aerospace series . carbon fibre laminates . determination of the fibre , resin and void contents
航空航天系列.碳素纤维层压材料.纤维.树脂和空隙量的测定
Tests relating to pavements . surface drainage properties on pervious pavements . determination of the connected voids content of bounded materials
路面试验.渗水路面的表层浅水特性.胶粘材料连接空隙量的测定
Textile glass reinforced plastics . determination of void content . loss on ignition , mechanical disintegration and statistical counting methods
纺织物玻璃纤维增强式塑料制品.空隙量测定.灼烧损耗机械粉碎和统计学计数法