difference value的用法和樣例：
例句
- The difference between the wires'voltages is what conveys the data.
用纜線兩端的電壓差值來表示傳遞信號。 - Two pointers can be subtracted, yielding the difference between the pointers.
兩個指針可做減法操作，得到它們之間的差值。 - You can instantiate value types in two ways.
可以通過兩種方式實例化值類型。 - The device calculates the fog value by referring to a lookup table containing fog values that are indexed to the depth of a given pixel.
設備計算霧化值時引用包含索引深度為指定像素的霧化值的查找表。
