The objective of Part B was to test an experimental "Combustion Primer" coating for the propellant to investigate whether igniteability may be enhanced by this method.
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combustion primer
燃烧底漆
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The Combustion Primer coating that was tested in this experiment would appear to be very effective for this purpose.
燃烧底漆涂层，这是测试在这个实验似乎很有效，作此用途。
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