vacuum tube 隐藏摘要  |
 | 真空管 |
| 阀动圆 valve circle 真空管 vacuum tube 真空柜 vacuum tank | |
| http://www.chinglish.com/community/revision/shipping-V?lang=en&lang=en&rev=3 - 基于358个网页 |
| 真空管，电子管 |
| vacuum tray dryer 真空盘架干燥器 vacuum tube 真空管，电子管 vacuum tube tester 真空管测试仪 | |
| http://www.dic123.com/dictionary/hardening+by+high-frequency+current.htm - 基于60个网页 |
| 电子管 |
| vacuum thermocouple 真空热电偶 vacuum tube 电子管 vacuum tube electrometer 真空管静电计 | |
| http://hi.baidu.com/475218727/blog/item/fcad3b3f827514e955e72349.html - 基于47个网页 |
| 真空管电子管 |
| vacuum tube 真空管 vacuum tube 真空管电子管 vacuum valve 真空阀真空管 | |
| http://www.for68.com/new/2006%5C8%5Cwu684118192212860024824-0.htm - 基于44个网页 |
| 相关词条 |
high vacuum tube  |
| vacuum tube relay |
| vacuum tube glass |
| vacuum tube switch |