把每一组的频率逐组相加,找出包含中位数的那一组.Add the frequencies in each class to find the class that contains that centermost element.一半数值低于中位数,一半数值高于中位数.One half of its values will be found below and one half above the median.儿童发铅中位数为7.45×...
It causes blindness or serious loss of vision.这能导致失明或视力严重受损。Early diagnosis and treatment can usually prevent blindness.早期的诊断和治疗通常可以预防失明。I have long since come to terms with my blindness.我早就安于自己的失明了....
这种维生素通过小肠壁被吸收。This vitamin is absorbed through the walls of the small intestine.肠肽酶是由小肠壁的腺体分泌的.Erepsin is secreted by glands in the wall of the small intestine.肠壁薄,几乎是透明的,这可能是因绒毛萎缩.The wall is thin and almost transparent...
He was making a visible effort to control himself.他明显是在努力控制自己的情绪。It is incumbent upon all of us to make an extra effort.我们所有人都必须加倍努力。Even carrying the camcorder while hiking in the forest was an effort.在森林中徒步旅行时，即便带的是便携式...