A source said the burn-through probably occurred at a seal point between the booster 's third and fourth sections.

一位提供消息的人说，烧穿点可能发生在火箭的第三和第四部分之间的焊接点上。

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Experimental result shows: 1 on the condition of multi-point explosive, capacity of annular booster explosive is higher than that of cylinder by about 57%.

实验结果表明：1多点起爆条件下环形传爆药柱的起爆威力较圆柱形提高约57%。

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The new mayor made the point that he was not a tax booster by sending those proposals to the dumpster.

FORBES: Magazine Article

Called Repevax, it has been given to all three year old children as a pre-school booster for nearly a decade and health officials point to its excellent safety record.

BBC: Whooping cough vaccine a 'no-brainer' during pregnancy