The poll of 2, 000 radio listeners found tweeting, chirping and warbling was the post popular alarm call followed by church bells and balloon squeaks.
一项有近2000名收音机听众参与的投票显示，唧啾婉转的鸟鸣力压教堂钟声和气球的吱吱声成为最受欢迎的闹铃声。
The idea of inflatable spacecraft is not new. The Echo I - NASA's first communication satellite - was essentially 100-foot-wide Mylar balloon that reflected radio transmissions from the ground.
充气式航天器并不是什么新颖的想法，NASA的第一颗通讯卫星回声1号实际上就是一个宽30米的聚酯薄膜大气球，它是用来发射来自地面的无线电广播的。
Such as esophageal electrophysiology device, radio frequency ablation device, long-term 12-lead ECG recorder, aortic balloon pump apparatus, treadmill machines, tilt bed.
如食道电生理仪、射频消融仪、12导长程心电图记录仪、主动脉球囊反搏仪、运动平板机、直立倾斜床等。
Such as esophageal electrophysiology device, radio frequency ablation device, long-term 12-lead ECG recorder, aortic balloon pump apparatus, treadmill machines, tilt bed.
如食道电生理仪、射频消融仪、12导长程心电图记录仪、主动脉球囊反搏仪、运动平板机、直立倾斜床等。
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