屈服点伸长—材料有屈服点时，屈服点伸长（YPE）就是试样开始的长度与连续屈服后的伸长（应力不增加，应变不断增加的部分）之间的差额。
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Other partners and international agencies include: UNICEF, the Institute of Religious Studies (ISER) in Rio de Janeiro and Youth for Peace and Education (YPE), a Montreal-based interreligious organization, which trains educators for peace worldwide.
UNESCO: SERVICIO DE PRENSA
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