constant: adj.1.恒定不变的,固定的,稳定的,恒久的;继续不断的。2.不屈不挠的,坚韧的。3.忠实的,有节操的。短语和例子be constant in love 忠贞不渝的爱情。 two days of constant rain 两天接连下雨。 constant to one's duty 忠于职守。 constant wind 恒风。n.【数、物】常数,恒量;恒定(值);(常
The pure sample with spinel structure can be easily prepared by optimizing the processing parameters . the typical product is limnio4 with the cell constant a = 8 . 235 and the powder size belongs to nanometer and sub - micrometer 表明用改进的柠檬酸配合法可以合成出单相正尖晶石limn _ 2o _ 4 ,其典型的试样组成为limn _ 2o _ 4 ,晶格常数= 8 . 235 ,粒度大小为纳米级。