“direction numbers”的概念、定义、翻译、参考文献-科学参考

单词	direction numbers
释义	direction numbers [di`rek·shǝn ´nǝm·bǝrz] ^MATHEMATICS Any three numbers proportional to the direction cosines of a line in space. Also known as direction ratios.
随便看	digital loop carrier digital message entry system digital microwave radio digital modulation digital monitor Digital Multiplexed Interface digital multiplier digital navigation system digital output digital phase shifter digital plotter digital printer digital private automatic branch exchange digital radio digital radiography digital recorder digital recording digital representation digital resolution digital signal analyzer digital signature digital simulation digital speech communications digital subtraction angiography digital synchronometer

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