modulus of direct elasticity纵向: direction; machine direction ...弹性模数: modulus of elasticity扬: raise氏: family name; surname率: rate; ratio; proportion下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:纵向弹性模数, 扬氏率, 扬氏系数，即可在微信中查询翻译
