differential coefficient equation group的用法和樣例：
例句
- This is called a normal system of differential equations.
這稱(chēng)為正規微分方程組。 - This paper presents theoretically the differential equation group of heat and mass transfer process in the plate evaporative air coolers.
摘要根據熱力學(xué)和傳熱學(xué)理論，建立了板式間接蒸發(fā)式空冷器傳遞過(guò)程的微分方程組。
