1) roll period meter
横摇周期测定器
2) rocker
[英]['rɔkə(r)] [美]['rɑkɚ]
摇摆器，摇轴
3) wiggler
[英]['wiglə] [美]['wɪglɚ]
摇摆器
1.
A wiggler mechanism for SASE-FEL;
一种SASE-FEL用摇摆器机制探讨
2.
In the FEL experiment,when electron beam passes through the wiggler,because of the periodical magnet field,the movement of electron beam will be changed to wiggle in the wiggler.
在FEL实验中,电子束通过摇摆器,一方面由于周期性磁场作用,电子束轨迹要周期性的摆动,另一方面还要辐射同FEL辐射波长一致的自发辐射,该辐射谱反映电子束、摇摆器集成后的参数。
3.
Basing on these formulae,we have got full three-dimension expressions for magnetic field of periodic array wiggler with permanet-magnets and two-dimension expressions for magnetic field of six types of one-component periodic array wigglers.
从电磁场基本理论出发，导出了计算永磁体磁场的基本公式，在此基础上得出了二维和三维永磁体直线周期阵列摇摆器的磁场计算公式。
4) minor cycle counter
短周期计数器
5) Rolling Period
横摇周期
1.
This paper,by means of the determination and error analysis of the initial stability of the general ship on passage,explains the relationship between the rolling period and the initial metacentric height,and tries to find the method of raising the accuracy in determining the initial stability in order to guarantee ship s navigation safety.
通过航行中对杂货船初稳性的测定及产生