E 类和 A 类空域的划分取决于在这两类空域飞行的飞机类型。
The reason for the division of Class E and Class A airspace stems from the type of planes operating in them.
ELA的意思系欧洲轻型飞机，并不是一个真正的飞机类型，相反，确切的说是一个认证程序。
ELA stands for European Light Aircraft and is not really a new class, but rather a certification process.
这一世界上最大的航空公司关注从达拉斯到中国大陆的服务项目，但是却被成本结构、劳动力条件、飞机类型和生产可持续性提供的航班这些因素所限制。
The worlds largest airline had eyed services from Dallas to greater China but was limited by factors including cost base, Labour conditions, aircraft type and product to sustainably offer flights.
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