“density step tablet”的概念、定义、翻译、参考文献-科学参考

单词	density step tablet
释义	density step tablet [`den·sǝd·ē `step ´tab·lǝt] ^{COMMUNICATIONS} Facsimile test chart consisting of a series of areas; density of the areas increases from a low value to a maximum value in steps. Also known as step tablet.
随便看	nimbus nim oil N indicator nine-j symbol bilateral hermaphroditism bilateral Laplace transform bilateral network bilateral observation bilateral slit bilateral symmetry bilateral tolerance bilateral transducer Bilateria bilayer bile bile acid bile duct bile pigment bile salt bilge bilge block bilge board bilge keel bilge keelson bilge pump

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