1) Reversing frequency
换向频率
2) frequency commutation
频率换向
3) Commutating fluctuating frequency
换向脉动频率
4) commutator frequency changer
整流子频率变换器，换向器式变频机
5) frequency conversion
频率变换
1.
The lithium thioindate(LiInS_2) crystal is an attractive material,which can be widely used for nonlinear optical frequency conversion in the infrared region.
LiInS2晶体是一种极具吸引力的晶体,可以应用于红外区域的非线性光学频率变换。
2.
The theoretical calculation of frequency conversion in a new bismuth triborate (BiB3O6) crystal with high nonlinear optical (NLO) coefficient is present.
理论计算了新型高非线性光学系数三硼酸铋晶体(BiB3O6)中的频率变换。
3.
This paper presents a new type of low noise frequency conversion circuit based on the research of phase noise conception, generation as well as relativity measurement method.
本文在对相位噪声的概念、产生及其相关测量方法研究的基础上,设计出一种低噪声频率变换电路。
6) Turnover frequency
转换频率
1.
The relationship of surface active site and turnover frequency versus activity for ammonia synthesis catalyst which were obtained from different iron oxide as precursor were investigated by means of a physisorption of N 2 and a chemisorption of CO and CO 2 and activity test.
随着母体铁氧化物性质和组成的变化 ,催化剂活性 (以氨的体积分数表征 )、质量反应速率 (rm)、合成氨转换频率 (TOF)和表面酸覆盖度 (SA)及其酸碱覆盖度的比例 (SA/SK)有相似的变化规律 ,即与Fe2 +/Fe3+呈驼峰形变化曲线 。
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
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