首先，他们已经部署了遥控机器人驾驶的潜水艇潜入水下试图通过激活防喷器来关闭油井。
First, remote-controlled robot submarines have been deployed to try to seal off the oil well altogether by activating a massive device called a blowout preventer.
在构建这个应用程序时，首先定义一些命令，这些是iPhone遥控器显示的选项。
Building the application starts with defining some commands that the iPhone remote control will present for you to select.
首先对平流层演示飞艇的自主飞行控制系统和遥测遥控系统进行了介绍；
Autonomous flight control system and telemetry and telecontrol system of stratospheric demonstration airship are introduced firstly.
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