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截锤问题中，随着时间的推移，剩余杆子的长度极限存在，就是0
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The first known use ofself-plagiarismwas in 1833.Merriam-Webster defines it as "the reuse of one's own words, ideas, or artistic expression (as in an essay) from preexisting material especially without acknowledgment of their earlier use".Borrowing your own words is a tricky issue. … Writers and publishers tend to rankself-plagiarismas a lesser offense than—what should we call it?—"real" plagiarism? Still, they mostly agree it's a no-no. — Taylor WoffordQuestions.How do you define self-plagiarism? How to properly use one's own previous works in an academic paper?
包装应具备 （ ）方面的功能 。
使用后的包装应该再利用回收，这就需要包装具有环保性功能。
封闭体系中,若某过程的ΔA=0,应满足的条件是:
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