Positive-working thermally imageable elements, useful as printing plate precursors and having reduced ablation when thermally imaged, and methods for their preparation are disclosed.

本发明公开了可用作印刷板前体、并在热像时具有较作用的正性热可像元件及其制备法。

In this study a series of different maturation degree coals are yielded by thermally treating a lowgrade lignite, and are used as the sorbents for sorption equilibrium study of phenanthrene.

云南先锋褐煤采用热模拟的实验法制得一组熟度不同的煤,并煤中的干酪根用于对菲的吸附研究。