When scientists first analyzed the wood of vintage Cremonese violins in compared with the modern violin wood, they calculated the average density and found no difference.
The industry has generally favored LOCs of one sort or another as an indication of size, as shown by defect density almost invariably calculated as defects per LOC.
行业一般支持一种或另一种LOC作为大小的指示，如根据每L OC的缺陷计算的几乎不变的缺陷密度所示。
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In a study published in the journal Obesity Reviews, they calculated the average energy density of menus at McDonald's, KFC and Burger King, using nutritional data from the fast food chains' websites.