seal
... seal up 密封住 seal 封铅 Sealab 海底实验室 ...
lead seal
... lead seal type hanger 铅封式悬挂器 lead seal 封铅 lead selector 引入线选择器 ...
sealing lead
... sealing layer 防水层 sealing lead 封铅 sealing material 密封材料 ...
start from scratch
在职攻读硕士学位全国联考英语考试大纲词汇表[S-T] ... on schedule按预定时间 start from scratch从头做起,从零开始 a.秘密的,机密的 ...
VRLA ; VALVE REGULATED SEALED LEAD-ACID BATTERY ; VRLA battery ; vrla batteries
Sealed lead acid batteries
SEAL FEE