alternative variation中文什么意思

对立变异

• alternative:    adj. 1. 随便一个的，二中择一 ...
• variation:    n. 1.变化，变动。 2.变量，变 ...
• alternative:    adj. 1. 随便一个的，二中择 ...

例句与用法

1. 7 the investigation of the thermoeconomic performance of an existing facility used for thermal fatigue experiments of aircraft canopy reveals the possibility and practicability of taking measures to improve it significantly . a piping system with alternative variation of flow temperature exists in this facility
   对一现行的飞机座舱盖热疲劳试验系统? ?即流体温度升降交替变化的管路系统，进行了热经济行为的研究，揭示出它具有潜在与可行的重大改进方向和途径。