例句與造句

1. Matheron did indeed derive length-weighted average grades of core samples and ore blocks but did not derive the variance of these functions.
2. In time, the length-weighted average grade for Matheron's three-dimensional block grade was replaced with the distance-weighted average grade for Agterberg's zero-dimensional point.
3. In time, the length-weighted average grade for Matheron's three-dimensional block grade was replaced with the distance-weighted average grade for Agterberg's zero-dimensional point.
4. It's difficult to find weighted average grade in a sentence. 用weighted average grade造句挺難的