Important chemical principles such as chemical reaction rate, deposition, chemical activity of metals were pointed in this textbook.
《定性化学》提出化学反应速率理论、沉淀理论、金属活泼性理论等重要化学原理；
2
First, the paper puts forward a smoke-puff trajectory model in which topography, deposition, chemical elimination and reflex effects within the mixture layer have been taken into consideration.
在模式中考虑了地形、沉积、化学衰减和混合层顶多次反射等影响因素的作用。
3
Since no company has perfected the chemical vapor deposition process, Applied materials is testing out their process using a variety of methods and materials.