比体积 meaning in English

bulking value
specific volume

Using the advanced technology by its head office ( newkey co . , ltd . ) , it produces various kinds of alumina black and white ceramic products . the component alumina ceramics , which are widely used in electron components , devices , electrical products , enjoy low loss of high frequency , high insulating strength , good specific volume resistance , small dielectric constant , high mechanical intensity and excellent airtightness and thermal and chemical stability
本公司根据目前市场需求，生产出各种型号的黑、白陶瓷产品，广泛应用于电子、电工、化学工业、纺织工业、水暖、宇航、环保等诸多方面，系列产品有高频损耗少，比体积电阻大，介电常数小，强度高，气密性、热稳定性、化学稳定性好等特点。