The design of the ball blast house and the choice of impeller head is the key introduced.

着重介绍了抛丸室的设计、抛丸器的选型和布置。

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According to the fact in factory, it introduced the layout, the structure, and the system debugging of the production line. The merit of the vertical ball blast is also analyzed here.

阐述了该生产线的规划、系统组成、系统调试以及立式抛丸的优点。

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The ball rocketed more than 300 feet off the ground, and far beyond the right field roof of the Giants' Polo grounds-a blast later estimated at 475 feet (144.8 metres).

球迅速飞升至离地300英尺以上，远远超出了巨人队波洛体育场的右野场顶，后来的爆炸估计发生在475英尺处(144.8米)。

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Police in riot gear responded with "blast ball" grenades that release smoke laced with pepper spray.

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Rooney outmuscled Ifil as the ball bounced back towards the Aberdeen goal but, with the goal at his mercy, the striker contrived to blast the ball wide of the near post when a shot across the bows of Howard seemed the better option.

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However, keeper Smith parried and McGinn pounced on the rebound to blast the ball into the back of the net.

BBC: Emilio Izaguirre