升降指数
- 网络breadth of market
升降指数-
将泰勒展开的两种等价形式应用于升降算符的和指数式，简洁地导出了一维谐振子的与算符的矩阵元计算通式。
Applying two equivalent forms of Taylor expansion to the exponential operator which consists of raising and lowering operators , the general formulae of matrix elements of and for harmonic oscillator are derived concisely .
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升降频采用直线升降法、指数曲线升降法或抛物线升降法。
The frequency-rising and frequency-falling use linear method , exponential curve method and parabolic curve method .