However in recent years, sunbeds have been manufactured that produce higher levels of UVB to mimic the solar spectrum and speed the tanning process.

  • 然而近年来,许多厂商生产含有高程度UVB射线的人工日晒床以模拟太阳下的辐射光谱与加速晒黑的速度。
目录 查词历史