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

单词	pyramidal numbers
释义	pyramidal numbers [¦pir·ǝ´mid·ǝl `nǝm·bǝrz] ^MATHEMATICS The numbers 1, 4, 10, 20, 35, . . . , which are the number of dots in successive pyramidal arrays and are given by (1/6)n(n + 1) (n + 2), where n = 1, 2, 3, . . . .
随便看	airspeed head airspeed indicator air spora air spring air stack air-standard cycle air-standard engine airstart air starting valve air station airstream air strike air strip air stripping air-supply mask air surveillance air surveillance radar air survey air-suspension encapsulation air-suspension system air sweetening air switch air system air taxi air temperature

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。