| 投影机 | tóu yǐng jī | projector | ![]() |
| 投影仪 | tóu yǐng yí | projector | ![]() |
| 水声换能器 | shuǐ shēng huàn néng qì | underwater sound projector / projector | ![]() |
| 幻灯机 | huàn dēng jī | slide projector / overhead projector | ![]() |
| 天象仪 | tiān xiàng yí | planetarium projector | ![]() |
| 磁照图发生器 | magnetic signature projector / magnetic signature duplicator / magnetic signature replicator | ![]() | |
| 高射投影机 | overhead projector | ![]() |
