Only differences in enthalpy are of practical engineering interest.在实际工程上有意义的只是热含量之差.A change in enthalpy also takes place when a change of phase occurs.相发生变化时,焓也发生变化.The enthalpy is constant in the throttling process.节流...
在无胚乳的种子中, 胚乳是 短命 的.In exalbuminous seeds, the endosperm is short - lived.乳糖是乳的主要碳水化合物.Lactose is the main carbohydrate occurring in milk.在有胚乳的种子中, 它保留作为成熟种子中的永久贮藏器官.In albuminous seeds, it remains as a permanent storage ...