| 单词 | n |
| 释义 | n (ital.) Chem. , symbol for amount of substance • Printing , symbol for en • (ital.) Genetics , symbol for haploid chromosome number (also in 2n (diploid), 3n (triploid), etc.) • (ital.) Maths , symbol for indefinite number • symbol for nano- (prefix denoting 10-9, as in nm , nanometre) • Physics , symbol for neutron • (ital.) Chem. normal (i.e. unbranched, as in n-butane ) • Electronics n-type (semiconductor) • (ital.) Physics , Chem. , symbol for number density (of atoms, particles, etc.) • (ital.) Physics , symbol for principal quantum number • (ital.) Optics , symbol for refractive index • (ital.) Physics , symbol for rotational frequency |
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