1) J O theory
升频发光
1.
We have also measured its optical absorption spectrum and calculated spontaneous emission probability,oscillator intensities,braching ratio and lifetime of different energy levels of Tm 3+ ions using J O theory.
报道了一种新组份亚碲酸盐玻璃作为掺稀土基质在提高升频发光效率方面的优良特性 。
2) Up conversion fluorescence
升频荧光
3) up-conversion fluorescence
升频转换荧光
4) up converting laser
升频转换激光器
5) increasing frequency and increasing voltage
升频升压
1.
The motor s start and accelerating process were carried out by increasing frequency and increasing voltage method.
针对无位置传感器无刷直流电动机的控制要求,采用反电势积分法来获取转子位置信号,根据电机转速进行相位补偿,实现了电机的准确换相控制;采用升频升压法实现电机的起动和加速,最终切换为无位置传感器无刷工作状态。
6) frequency ramp
频率斜升
1.
The traditional second-order PLL has trouble tracking frequency ramp signals due to their inability to follow a variable phase source.
由于稳态相差的原因,传统的二阶锁相环无法跟踪频率斜升信号,这里提出一种采用2型环路滤波器的锁相环路,对频率斜升信号具有较好的锁定效果。
2.
Due to steady phase error,low-order PLL has a trouble in tracking frequency ramp signals,so that the receiver cannot lock carrier signals.
低阶锁相环跟踪频率斜升信号时产生的稳态相差致使环路失锁,接收机无法锁定载波信号。
补充资料：场致发光材料(见电致发光材料)
场致发光材料(见电致发光材料)
electroluminescent material
见场致发光材料eleetrolumineseent material 电致发光材料。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条