【正文】
as was put forward.Chapter 1 Units and Dimensionsv 1 Unitsv SI, English (British), Engineering systemsv 2 Dimensionsv Definition: each primary quantity may be represented by a letter which symbolizes that quantity, this letter is called dimension.v For SI system, L for length, M for mass, T for temperature, ? for time.v 3 Unit conversion.謝謝觀看 /歡迎下載BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH