The missile was fueled within the protection of its silo, and was raised to the launch position through doors at the top of the silo just minutes before launch.
导弹在其发射井的保护下加燃料，并在发射前几分钟通过发射井顶端的舱门升至发射位置。
Unlike China's older silo-based strategic missiles, which would have been relatively easy to destroy before launch, the DF-31 can be concealed on the back of a lorry.
东风31不同于中国旧式的基于发射井的战略导弹，旧式的相对很容易在发射前就被摧毁，而东风31能够隐藏于卡车后面。
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