tenth value layer是什么意思

用法例句

And last the conclusion was drawn that the reflective intensity of X-ray weakened with the temperature raising,but the sharpeness of lines did not lose with the temperature raising.

由实验测出铝的X射线反射谱线的强度,得到其反射强度随温度变化的曲线,并从理论上对实验结果作了分析,得到了X射线反射强度随温度的增高而减弱,而谱线的锐度却不随温度升高而受到损失的结论。