求翻译：4月19日，欧盟委员会发布通信技术新规范，要求欧盟各成员国开放900MHz和1800MHz两个GSM专用频段供4G数据通信网络使用，可运行的网络类别包括LTE和WiMAX两种标准。是什么意思？

April 19, the European Commission issued a new specification of the communication technology requirements of the EU member states open 900mhz and 1800mhz two gsm dedicated band for 4g data communications network, can run the network category includes both lte and wimax standard.

On 19 April, the European Commission published new norms, communication technology for the Member States of the Union and 1800 open 900 MHz MHz two GSM dedicated Band G for 4 data communications network used to run the Network category including WiMAX LTE and two standard.