上四分之一 meaning in English

upper quadrant
upper quartile
upper-quartile

The quarter turn graduations on the sleeve , with the scribed line on the stem , provide for approximate flow measurement
在套筒上四分之一转的刻度，以及阀杆上的刻痕，显示大约的流量测量。
Humans have changed ecosystems more rapidly and extensively in the past 50 years than in any comparable time in human history , it says , with a quarter of the planet now under cultivation
在过去的50年里，人类对生态系统的改变比人类历史上的任何时候都要迅速和广泛，该结论称，地球上四分之一的土地已经被开垦。
That love affair translates to big consumption : the u . s . slurps up to a quarter of the world ' s oil ? about three gallons ( 11 liters ) a person every day ? even though it has just 5 percent of the world ' s population
这种酷爱也随之带来了巨大的消耗量：尽管美国人口只占世界人口总数的百分之五，但却消耗了世界上四分之一的原油- -大约每人每天消耗三加仑( 11升) 。