(chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
双语例句
Coal was formed out of dead forests by chemical processes. 煤是已死森林经过化学作用而形成的。
As the wrigglers develop, the gelatinous outer membrane decomposes, perhaps triggered by a chemical change in the tadpoles. 随着这些小虫的生长，胶状的外部膜会分解，这可能是由于蝌蚪内部的化学作用而触发的。
