Burt Rutan, head of Scaled Composites, told him it was a spaceship.
他问随行的波特·鲁坦(复合比例公司的总管)那是什么。
The jet behavior of a multi nozzle head scaled from an existing engineering was investigated experimentally in a steady unstratified receiving water body.
在没有密度分层的容泄水体条件下,对某污水排海工程多孔喷头的射流特性进行了实验研究。
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