The appropriate type can be selected according to the operating conditions.
合适的类型可以选择根据操作条件。
Each satellite has its own orbit which is selected according to its purpose.
每一颗人造卫星根据其不同目的选用不同的运行轨道。
Note: Generator can be selected according to customer's need or actual production.
注:发电机可根据用户需要或实际生产选择。
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