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A VALEDICTION FORBIDDING MOURNING. by John DonneAS virtuous men pass mildly away? ??? And whisper to their souls to go? Whilst some of their sad friends do say ??? Now his breath goes and some say No.
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Materials for high v
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Concretepolymer-matrixposites metal-matrixposites ceramic-matrixposites 增强相三种类型 tensile strength of fiber ε- is larger than of matrixσ2. the fracture stain of fiberε- is lower than th
Research Paper Abstract WritingPurposesSelectionIndexingFeaturesAbstracts are self-contained andplete;cover the main points and contain key words;are unified and coherent; follow the original styl
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