a thick sticky substance that is produced by some trees and that becomes yellow and hard after it is collected , or any of various similar substances produced chemically for use in industry
发音
例句
1. This allyl type resin is a highly transparent, colourless material. 这种烯丙基型的树脂是一种高度透明的,无色材料。 2. This is referred to as a thixotropic property of the resin. 这种特性叫做树脂的触变性。