on a standard的用法和樣例：
例句
- The force of the wind is measured on a standard scale of0-12.
風力是按0－12級標準等級測量的。 - A unit of fineness for rayon, nylon, and silk fibers, based on a standard mass per length of 1 gram per 9,000 meters of yarn.
丹尼爾測量纖維、尼龍或絲的光潔度的單位，每9,000米線重1克稱作為丹尼爾。 - The force of the wind is measured on a standard scale of 0-12.
風力是按0-12級標準等級測量的。
