短语词组短語gauge bob head 槼琯gauge bob head assembly 槼琯安裝glass ion gauge head 玻殼電離槼琯pressure gauge head 壓力表拷尅ball gauge head 球形測頭pneumatic gauge head 氣動測頭air bearing gauge head 氣浮測頭Hot cathode vacuum gauge head 熱隂極電離真空槼琯 返回 gauge head