“发射器”怎么读

他用微型声波发射器开启了门。He activated the door with the miniature sonic transmitter.他最喜欢的还是那个俄制的火箭发射器,它可载40枚三米的火箭.His favourite gadget is a Russian - made rocket launcher which holds 40 three metre - long missilles.沉淀使灌溉系统中的发射器发生被阻...

“发射器”的英语可以翻译为：ejector，emitter，projector，launche...