在山頂xuxu,一定要PP向上,由自身重力平衡xuxu的推進力.先進的潛艇兩棲裝甲車都有噴水推進係統,原理與此類似
在山頂xuxu,一定要PP向上,由自身重力平衡xuxu的推進力.先進的潛艇兩棲裝甲車都有噴水推進係統,原理與此類似
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