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The mass spectra of ureide-type noncyclic polyethers with 2(3H)-benzoxazolone as end groups were studies.

研究以2(3H)-酮为端基、具有酰脲结构的环多醚化合物的质谱。

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A raw rubber for millable polyether polyurethane elastomer was prepared.

研制新型的聚醚型聚氨酯生胶。

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door-to-door, doorward, doorwards, doorway, doorways, doorweed, dooryard, doozer, doozy, DOP,

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3G, 401(K), a,

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Becoming

You wouldn't think I'd be the type of person to find psychic relief in the intricacies of the urethane polyether polyol trade, but I did.

你不会认为我会在错综复杂的聚聚醚多元醇贸到心理解脱的人,但我做到了。

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dope, dope sheet, doped, dopehead, doper, dopesheet, dopester, dope-vapourizer, dope-vector, dopey,

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3G, 401(K), a,
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