巡航高度层 meaning in English

cruise flight level
cruising level

" with the implementation of clearance data link service , the provision of pre - departure clearance information in respect of the departure routes , altitude restrictions and cruising levels etc . , which are used to be provided through radio communication , can now be transmitted via data link for display or print out in the cockpit to reduce pilots workload , " mr lam said
自从推出起飞前放行指示数据链路服务后，有关离场路线、高度限制和巡航高度层等资料现已可在驾驶舱内显示或列印出来，从而减轻飞行员的工作量。