The form telecommunication is used as a modifier. telecommunication 用作修飾語(yǔ)。
1. 電信;電訊 Telecommunications is the technology of sending signals and messages over long distances using electronic equipment, for example by radio and telephone.
e.g. ...the UK telecommunications industry. 英國電信業(yè) e.g. ...a Japanese telecommunication company. 日本電信公司