NASA needs good weather to launch Ares I-X because engineers need to see the rocket flight all the way through first stage separation, which will mark the end of the test.

NASA需要好天气来发射战神I-X，因为工程师们要在第一级火箭分离前观测火箭飞行全过程，第一级火箭分离标志着试飞的结束。

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Therefore, based on the laboratory test, an industrial test on the stage grinding and stage separation process was carried out.

为此，在实验室试验的基础上进行了阶段磨选工业试验。

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Test research of discarding coarse tailings in new technological flowsheet consisting of two stage continuous grinding-gravity separation-magnetic separation-reverse flotation is described.

介绍了东鞍山矿石两段连续磨矿、重选-磁选-反浮选新工艺流程中粗粒部分抛尾试验研究。

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