Located under the earth ' s surface ; underground 地下的位于地球表面以下的;地下的
I ' m saying that you ' re an iceberg in that over 90 % of your mass is below the surface 我是说你是一座90的重量都在表面以下的冰山
Some of this ice becomes translucent , allowing sunlight to heat carbon dioxide below the surface , changing it from a solid directly into a gas in a process called sublimation 其中一些变得半透明,可以让阳光穿过,融化表面以下的二氧化碳。使它由液体直接变成气体,这个过程称为气化。
By using the detecting system of thermal waves and measuring the change of temperature at the surface of materials , the internal structures can be obtained for purpose of detection and inspection 利用热波探测系统和测量固体材料表面温度的变化,可获取材料的均匀性信息及其表面以下的微结构信息,从而达到检测和探伤的目的。