標(biāo)題: ASTM C 769-1998 為獲得近似揚(yáng)氏模量測(cè)量加工的炭精及石墨材... [打印本頁] 作者: 兌水 時(shí)間: 2009-9-18 19:46 標(biāo)題: ASTM C 769-1998 為獲得近似揚(yáng)氏模量測(cè)量加工的炭精及石墨材... C769-98 Standard Test Method for Sonic Velocity in Manufactured Carbon and Graphite Materials for Use in Obtaining an Approximate Young's Modulus