1)#2 common,普二级2)Second cape,二级开普钻3)the Second-order Doppler Frequency Shift,二级多普勒频移4)second order Doppler shift,二级多普勒移5)elementary Putonghua,二级乙等普通话6)ordinary alcohol,普级酒精
用法例句
Researching of the Second-order Doppler Frequency Shift in Optically Pumped Cesium Frequency Standard;
光抽运铯原子束频标的二级多普勒频移研究
The second order Doppler shifts, δ SOD , were estimated in terms of the Debye theory and the isomer shifts, δ IS , were obtained as the differences between the experimentally determined δ CS and the estimated values of δ SOD .