研制一种新型超低频垂直隔振系统.A novel ultra - low frequency vibration isolator is established.控制电源输入, 实现了超低频电缆试验装置的输出幅值从0～30kV可调.By controlling input of power, the output from 0 ~ 30 kV of sinusoidal can be adjusted.在特征提取中还考虑了HRV中 超低频...
迎接他的是大家齐唱《祝你生日快乐》，令他非常感动。He was greeted with a rousing chorus of Happy Birthday.唱到副歌时，大家都跟着齐唱起来。Everyone joined in the chorus.歌词的最后部分要齐唱.The last verse will be sung in unison....
Exogamy The fusion of gametes produced by organisms that are not closely related.(异系配合):亲缘关系较远的生物体产生的配子相互融合.Exogamy remains much less prevalent among African Americans.异族婚姻在非洲裔美国人中仍然很少见。Last, it analyzes the relationship...