English translation for "upper-and-lower groups design"

高低组设计

Similar Words：

"upper-air sounding" English translation, "upper-air station" English translation, "upper-air synoptic station" English translation, "upper-air temperature" English translation, "upper-air wind" English translation, "upper-atmosphere aerodynamics" English translation, "upper-atmosphere exploratory flight" English translation, "upper-atmosphere instrumentation" English translation, "upper-atmosphere phenomena" English translation, "upper-atmosphere phenomenon" English translation