It presents recommended levels and frequency characteristics for the inductive field at the telephoneearphone relative to a sound level presented at the same earphone.
该条给出了电话耳机处相对于该耳机发出的声压级的,所建议的感应场的强度级和频率特性。
2
An operator wearing earphone was sitting in the telephone exchange.
戴耳机的接线员正坐在总机室里。
3
The essay mainly expatiates the method to earphone of mobile telephone with SF200Learphone integration tester and the usual problems in the testing process.