存在着许多势能和动能的能源.There exist many sources of energy both potential and kinetic.最大势能和总能量是 多少 ?What are the maximum potential energy and the total energy?因此,我们可以说,该系统有内势能.We can therefore say that the system has internal pote...
Quinine: Alkaloid found in the bark of cinchona trees and shrubs.奎宁: 金鸡纳树皮中的生物碱,主要用于治疗疟疾.It is a curare alkaloid derived from the South American plant.它是箭毒碱,提取自一种南美产的植物.Morphine: Heterocyclic compound, narcotic analgesic...