无线电波

Because radio waves travel at 186,000 miles per second and sound waves saunter along at 700 miles per hour, a broadcast voice can be heard sooner 13,000 miles away than it can be heard at the back of the room in which it originated.

无线电波传播的速度为每秒186，000英里，而声波传播的速度仅为每小时700英里。在13，000英里以外收听广播的人，能比在播音室后部的人先听到播音员的声音。

As they do this, they send out radio waves of their own.

作为他们这样做，他们发出的无线电波自己。

Instead, big Ben's mellow voice came clear, sententious.

但恰恰相反，通过无线电波从收音机里传出的是大本钟柔和圆润的钟声，那么清晰、威严，给人以安慰和信心。

Transmission can be done by cable , radio frequency and satellite.

传递可通过海底电缆，无线电波和通信卫星来进行。

All that is needed to accomplish the radio control of the brain is a twitching muscle.

所需要完成的是无线电波来控制脑部肌肉的抽动。

Because light has a very high frequency, it can carry a lot more data than microwaves or radio waves, which have much lower frequencies.

由于光的频率非常高，可以比频率低很多的微波或无线电波承载更多的数据。

Because light has a very high frequency, it can carry a lot moredata than microwaves or radio waves, which have much lowerfrequencies.

由于光的频率非常高，可以比频率低很多的微波或无线电波承载更多的数据。

For this reason, water is transparent to radio waves and to visible light but opaque to microwaves.

就是因为这个原因，水对无线电波可见光言是透明的，但对微波而言是不透明的。

Endovenous laser appears to offer these benefits with lower rates of complication and avoidance of general anesthesia.

年4月1日-根据二篇在3月29 日于犹他州盐湖城所举办的介入性放射线学协会所发表的演说指出，雷射和无线电波疗法可以成功地治疗更大量的隐静脉逆流，这二种治疗均使并发症和复发率降低了。

Endovenous laser appears to offer these benefits with lower rates of complication and avoidance of general anesthesia.

年4月1日-根据二篇在3月29 日於犹他州盐湖城所举办的介入性放射线学协会所发表的演说指出，雷射和无线电波疗法可以成功地治疗更大量的隐静脉逆流，这二种治疗均使并发症和复发率降低了。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。