They concluded that ozone attack on natural rubber was extensive and complex and could be related to the acetone extractables . 他得出结论,认为臭氧对合成橡胶的侵蚀是广泛的复杂的,可以和丙酮的可提取性联系起来。
2.
The effects of anaphors on accessibility of antecedants in chinese 指代者对其先行词可提取性的影响