Constructed wetlands are part of a treatmenttrain, one stage in the treatment process.
人工湿地处理了部分列车，在治疗过程中的一个阶段。
2
According to twice applications of equal effective conversion treatment principle, two relative methods of train braking force calculation are established.
根据等效换算处理原则的两次应用，两种计算列车制动力的相关方法得以建立。
3
There is a long train of patients at the clinic queuing for treatment.