Yarn is punched through a polypropylene backing with needles and then cut to form "u" shaped tufts.

草丝在簇绒机上被切割成“U”型，针织在聚丙烯底衬上。

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Some of the top research universities with ED are Brown, Carnegie Mellon, Columbia, Cornell, Dartmouth, Duke, Emory, Johns Hopkins, Northwestern, NYU, Penn, Rice, Vanderbilt, Tufts, Wake Forest and Washington U in St.

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The event was organized by the Institute for Foreign Policy Analysis, Tufts University's Fletcher School of Law and Diplomacy and the U.S. Army.

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"This has the potential to clog the system and emergency departments already facing serious crowding issues throughout the U.S., " said Briggs, a registered nurse at Tufts Medical Center, in Boston, Massachusetts.

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