Naturalresins are usually transparent or translucent yellow to brown and can melt and burn.
树脂通常是透明的,或者是半透明的黄色到棕色物,能够熔化和燃烧。
2
The architects used finishes made from organic, environmentally friendly stains and sealants that contain naturalresins and gums extracted from tree heartwood.
建筑师用有机、环保的染料和密封剂制成饰面,含有天然树脂和树心提取的树胶。
3
Its major USES are for organic synthesis, especially of formaldehyde, as an automotive antifreeze, as a solvent for cellulosics and naturalresins, and as the principal denaturant for ethyl alcohol.