... elastic contact 铍青铜 beryllium 镀硬金或银 insulator 聚四氟乙烯 ...
基于42个网页-相关网页
... contact pin 黄铜 brass 镀硬金或银 socket 铍青铜 ...
基于40个网页-相关网页
... gold and silver ware 金银器皿 gold or silver plated 镀硬金或银 ; 镀金或银 ; 硬金或银 Gold and silver broker 黄金白银经纪人 ...
基于38个网页-相关网页