And the ratio of the color of the stone, to natural, harmonic, constitute a common style.
座与石的颜色配比，要天然、调和，构成共同的风格。
2
Another vital element is the removal of harmonic echoes in the higher frequencies, which result in a lot more detail and still a smoother and more natural sound.
另一个重要因素是消除谐波的回声在更高的频率，导致更多的细节，仍然是一个平滑，更自然的声音。
3
In this paper we discuss the natural boundary element method for harmonic equation in an exterior elliptic domain.