您要查找的是不是：
- multiple user vacuum tube 复合电子管, 复合真空管
- Diangong Heat tube Vacuum tube heat collector. 电工太阳能热管真空管集热器.
- Diangong Solar vacuum tube heat collector. 电工太阳能真空管集热器.
- Unable to set multiple user setting. 不能设置多重用户设置。
- Not any air gets into the vacuum tube. 没有空气能进入真空管。
- Allow multiple user to access the same database. 容许多个用者存取同一个资料库。
- John Ambrose Fleming invents the vacuum tube. 1904年的今天，约翰·安布鲁斯·弗莱明发明了真空管。
- An electron tube or a vacuum tube. 电子管或真空管。
- Lee de Forest invents the vacuum tube. 李.;德福雷斯特发明电子管。
- A specific vacuum tube which converts light into electrical energy. 把光转换成电能的一种真空管。
- Heat resistance soft vacuum tube avoids damage by hot nozzle. 防热真空软管,免被热吸咀误损。
- Battery used to maintain the grid potential in a vacuum tube. 能够保持潜藏在真空管内的栅格的电池。
- Additional customization features include User and Group Management,Service Management and Multiple User Profiles. 其它自定义特性还包括用户和组管理、服务管理和多用户配置文件。
- Vacuum tube amplifiers used the first time in coast-to-coast telco circuits. 真空管放大器首次用于大西洋岸至太平洋岸的电信电路中。
- Vacuum tubes require DC voltage sources as well. 真空电子管也要求以直流电压为电源。
- Additional customization features include User and Group Management, Service Management and Multiple User Profiles. 其它自定义特性还包括用户和组管理、服务管理和多用户配置文件。
- A shared mailbox is a mailbox to which multiple users can log on. 共享邮箱是多个用户可以登录的邮箱。
- Learn how to apply a single settings collection for multiple users. 了解如何为多个用户应用单一设置集合。
- The ancestor of these miniature electronic devices is the vacuum tube. 这些微型电子装置的鼻祖就是真空管。
- Allow multiple users to work with the contact list simultaneously. 允许多个用户同时使用联系人列表。
