Bone char, as a raw bone salt, may be used to reduce the fluoride concentration in drinking water to acceptablelimit.
作为一种粗制骨盐的骨炭可用来降低饮水中氟含量达到饮水标准。
2
Greater height entails increased column and beam sizes to make buildings more rigid so that under wind load they will not sway beyond an acceptablelimit.