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测量物体的密度,一般用ρ=m/V,关键在于测出物体的质量和体积.而待测物体是多种多样,各具特色的,所以密度的测量方法也很丰富多采.
Measuring the density of objects, generally use ρ = m / V, the key is to measure the quality and volume of the object. The object to be measured is a wide variety, each with its own characteristics, so the density measurement method is also very rich.