蒸腾效率 meaning in Chinese

transpiration efficiency
transpiratton ratio

Effects of elevated co2 concentration and drought on the photosynthesis and stomatal resistance and transpiration efficiency of different strains of spring wheat
2浓度升高对不同春小麦光合作用和气孔阻力及水分蒸腾效率的影响
While the rates of transpiration and photosynthesis in at was lower than that in ct , but the transpiration efficiency in at was higher than that in ct
交替灌溉的桃树的光合速率和蒸腾速率低于常规灌溉，但交替灌溉桃树比常规灌溉有较高的蒸腾效率。