亚洲 精品 综合 精品 自拍,师尊被掐着腰做到潮喷纯肉GB,国产精品精华液网站,欧美又粗又大又硬又长又爽视频

WELCOME TO WUXI CITY HUIFENG ELECTRONIC.CO.LTD!
National Consultative Hotline 0510-85310683

PRODUCT CENTER

Basic properties of dielectric ceramics

Pbulish:admin  time:2018年08Month03Day

Microwave dielectric ceramics (MWDC) is a kind of ceramic which is used as a dielectric material and performs a variety of functions in the microwave frequency band (mainly UHF, SHF band, 300MHz~300GHz). It is a hot topic in the field of microwave dielectric materials at home and abroad in recent years. This is mainly adapted to the development needs of microwave mobile communication.