2) 在Frequency Parameters页中设置Start Frequency(起始频率)、Stop Frequency(终止频率)、Sweep type(扫描类型)、Number of points per decade(取样点数)和Vertical scale(纵坐标刻度),亦可...
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Select start frequency before resonance 选择低频点
low-frequency start 低频起动
RF-STR Radio Frequency Start 射频闸门
Frequency converter start-up slowly 变频慢速启动
start-up frequency 启动频率
frequency start 频繁启动
Chirp up the chirp is played from start frequency to the end frequency.
短促声波开始短促声波从起动频率对结束频率播放。
Servo motor has small start frequency, can quickly from the lowest revolution accelerated to the rated speed.
伺服电机有很小的启动频率,能很快从最低转速加速到额定转速。
Servo motor have small start frequency, can quickly from the lowest revolution accelerated to the rated speed.
伺服电机有很小的启动频率,能很快从最低转速加速到额定转速。
So, if we start instead with talking about the energy levels, we can relate these to frequency, because we already said that frequency is related to, or it's equal to the initial energy level here minus the final energy level there over Planck's constant to get us to frequency.
如果我们从讨论能级开始,我们可以联系到频率上,因为我们说过频率和能量相关,或者说等于初始能量,减去末态能量除以普朗克常数。
So this is our final equation, and this is actually called the Balmer series, which was named after Balmer, and this tells us the frequency of any of the lights where we start with an electron in some higher energy level and we drop down to an n final that's equal to 2.
把2代入到这里,所以得到1除以,这就是我们最终的方程,这叫做Balmer系,以Balmer名字命名的,它告诉我们从高能级掉到n等于2的,最终能级所发出光的频率。
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