“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	input/output interrupt input/output interrupt identification input/output interrupt indicator input/output library input/output limited input/output order input/output processor input/output referencing input/output register input/output relation input/output routines input/output statement input/output switching input/output traffic control input/output wedge input program input record input register input resistance input resonator input routine input section input station input storage inquartation

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