The sponge density measuring instrument is a solid density measuring instrument leading.
海绵密度测定仪是领先的固体密度测量仪器。
The sponge density measuring instrument is mainly used for measuring the density of various sponge, sponge products raw materials and has the advantages of simple operation, good accuracy.
海绵密度测定仪主要用于各种海绵原料及海绵制品的密度测量，操作简单，精确度好。
A measuring instrument about diffuse visual transmission density is introduced, and a numerical calculating method is discussed, which is applied in the advanced research.
本文介绍了漫透射视觉密度基准的测量装置，详细论述了该基准装置改造时光路调试中应用的数值计算方法。
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